RESEARCH ARTICLE Open Access Patient and public involvement (PPI) in prisons: the involvement of people living in prison in the research process – a systematic scoping review Samantha Treacy1,2, Steven Martin3, Nelum Samarutilake2 and Tine Van Bortel2,3* Abstract Background: Patient and Public Involvement (PPI) in health and social care research is increasingly prevalent and is promoted in policy as a means of improving the validity of research. This also applies to people living in prison and using social care services. Whilst evidence for the effectiveness of PPI was limited and reviews of its application in prisons were not found, the infancy of the evidence base and moral and ethical reasons for involvement mean that PPI continues to be advocated in the community and in prisons. Objectives: To conduct a review of the literature regarding the involvement of people or persons living in prison (PLiP) in health and social care research focused on: (i) aims; (ii) types of involvement; (iii) evaluations and findings; (iv) barriers and solutions; and (v) feasibility of undertaking a systematic review. Methods: A systematic scoping review was undertaken following Arksey and O’Malley’s (International Journal of Social Research Methodology 8: 19-32, 2005) five-stage framework. A comprehensive search was conducted involving ten electronic databases up until December 2020 using patient involvement and context related search terms. A review-specific spreadsheet was created following the PICO formula, and a narrative synthesis approach was taken to answer the research questions. PRISMA guidelines were followed in reporting. Results: 39 papers were selected for inclusion in the review. The majority of these took a ‘participatory’ approach to prisoner involvement, which occurred at most stages during the research process except for more ‘higher’ level research operations (funding applications and project management), and only one study was led by PLiPs. Few studies involved an evaluation of the involvement of PLiP, and this was mostly PLiP or researcher reflections without formal or independent analysis, and largely reported a positive impact. Barriers to the involvement of PLiP coalesced around power differences and prison bureaucracy. © The Author(s). 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. 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The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. * Correspondence: tv250@medschl.cam.ac.uk 2Cambridge Public Health, Department of Psychiatry, School of Clinical Medicine, University of Cambridge, Cambridge, UK 3Leicester School of Allied Health Sciences, De Montfort University, Leicester, UK Full list of author information is available at the end of the article Health and JusticeTreacy et al. Health and Justice (2021) 9:30 https://doi.org/10.1186/s40352-021-00154-6 Conclusion: Given the very high risk of bias arising from the available ‘evaluations’, it was not possible to derive firm conclusions about the effectiveness of PLiP involvement in the research process. In addition, given the state of the evidence base, it was felt that a systematic review would not be feasible until more evaluations were undertaken using a range of methodologies to develop the field further. Keywords: Patient and public involvement in research, Engagement in research, Participatory research, Prison research, People living in prison, People formerly living in prison, Prisoners, Ex-prisoners, Scoping review Background Patient and Public Involvement (PPI) has been defined as “research being carried out ‘with’ or ‘by’ members of the public rather than ‘to’, ‘about’ or ‘for’ them” (INVOLVE, 2012). This has been promoted in UK government policy (Health Research Authority, 2017), is supported by their major research funding body the National Institute for Health Services Research (Russell et al., 2019), and national support centre INVOLVE, and has become increasingly prevalent in the UK over the last decade (Ball et al., 2019). The involvement of patients or the public in research is rooted in social justice and disability rights activism (Beresford, 2002; Glassman & Erdem, 2014; Macauley, 2017), and aims to move from paternalistic to demo- cratic practices in health and social care with knowledge and expertise shared between ‘professionals’ and ‘pa- tients’ leading to better quality and more valid research (Aubin et al., 2019; Hoekstra et al., 2020; Madden & Speed, 2017). However, the systematic, rapid evidence and literature reviews that have been conducted on PPI in health and social care research have indicated that there is typically a lack of evidence of effectiveness (Samele et al., 2008; Treacy et al., 2019). Although posi- tive impacts on patients, research quality, the research team and research system were widely reported (Ball et al., 2019; Brett et al., 2012), conclusions were severely limited as the research was generally of poor quality, with much of the ‘evidence’ based on researchers’ per- ceptions rather than on robust evaluation (Aubin et al., 2019; Ball et al., 2019; Cook et al., 2019; Mockford et al., 2012). In addition, a number of issues were documented that reportedly impeded implementation including: a lack of definition or theoretical basis guiding involvement (Mock- ford et al., 2012), increased costs and resources (Domecq et al., 2014), differences of opinion regarding the ‘repre- sentativeness’ of the patients and its necessity (Lander et al., 2019; Morgan, 2016), and tokenistic involvement (Madden & Speed, 2017; Ocloo & Matthews, 2016). Des- pite this, much of the literature maintained that PPI arose largely for moral and ethical reasons, which may have re- sulted in an evidence lag and advocated better evaluations and a focus on overcoming cultural challenges to ensure better implementation (Aubin et al., 2019; Ward, Bailey & Boyd, 2012). This paper specifically reviews the literature on the in- volvement of PLiP in health and social care research, which is also supported by policy on the involvement of ‘the public’ in research (Health Research Authority, 2017). For the purposes of this paper, PLiPs include people incar- cerated in both prisons and jails. The general health of PLiP is typically reported to be poorer than that of people living in the community possibly due to more chaotic life- styles including alcohol and substance misuse, less access to healthcare and stress related to the ‘pains’ of imprison- ment (Crewe, 2011; Williams et al., 2012). The sharp rise in older PLiP numbers over the last few decades (Lee et al, 2016; Sturge, 2020) has also, inevitably, brought with it an exponential increase in health and social care needs with an estimated 85% of PLiPs aged over 50 reporting prob- lems (Lee et al, 2019; Hayes et al., 2012; Senior, Forsyth, Walsh et al., 2013). Whilst policy and legislation promotes equivalence between the community and prisons regard- ing health and social care (Care Act, 2014; Department of Health, 1999), a recent parliamentary inquiry concluded that the government is “failing in its duty of care” to PLiPs (Health and Social Care Committee, 2018). In addition, PLiPs’ health and social care issues have reportedly been exacerbated by the restricted regimes and services and suspension of visits applied in prisons in response to the Covid-19 pandemic (Brennan, 2020; Her Majesty’s Prison & Probation Service, 2020), the impact of which have left PLiP and their families in “extreme distress and desper- ation”, particularly those most vulnerable (Prison Reform Trust, 2020, p. 7; Clarke, 2020). It is unclear how equivalent PLiP involvement in the health and social care research process is relative to that in the community as no reviews of the literature were found. However, PPI in prisons has been described as under-developed (Awenat et al., 2017). A study of prison and research staffs’ attitudes towards PLiP involvement demonstrated a lack of understanding and suggested that PLiPs were not seen as potential partners in the process (Johnson et al., 2018). One review outlined the possible ways that PLiPs could be involved, referring to the involvement of forensic mental health service users in research, but no examples of practice in prison were presented (Samele et al., 2008). Given the extent of PLiP needs and their position as perhaps the most disempowered health and social care Treacy et al. Health and Justice (2021) 9:30 Page 2 of 21 service users, their involvement in the research process would be highly consistent with the moral and ethical concerns driving public involvement in research (Revolv- ing Doors Agency, 2016). Therefore, it is the aim of this paper to explore the literature for examples of PLiP in- volvement in the research process and to undertake a systematic scoping review addressing the following re- search questions: 1. What were the aims of the research which involved PLiPs or people who were formerly living in prison (PFLiP) during the research process? 2. In what ways were PLiPs and PFLiPs involved in the research process? 3. Was PLiP or PFLiP involvement evaluated, and how was this carried out? What were the main findings of these evaluations? 4. What were the main obstacles in involving PLiPs or PFLiPs, and what were the suggested solutions for overcoming them? 5. Would it be feasible to undertake a systematic review of PLiP or PFLiP involvement in health and social care research? Methods Given the lack of reviews of PLiP involvement in health and social care research, a scoping review methodology was considered the most appropriate to explore the aims of the study. Scoping reviews are considered to be par- ticularly useful to systematically scope, chart and synthe- sise the available evidence in a research field with a view to examining whether a full systematic review could be conducted (Munn et al., 2018). This review used the five-stage scoping review framework posited by Arksey and O’Malley (2005), with reporting guided by the PRISMA extension for scoping reviews checklist and ex- planation (Tricco et al., 2018) – the completed checklist for this review is available in Additional file 1. The five- stage framework followed in this review were: Stage 1: Identification of the research question(s) – identified in the ‘Background’ section Stage 2: Identification of relevant reports – the literature search A search strategy to identify review-relevant reports was formulated by the research team, informed by sys- tematic reviews undertaken in relation to patient and public involvement in health and social care research more broadly (Brett et al., 2010; Staley, 2009). Searching included electronic and hand searching components. The electronic database search involved searching ten databases which focused on health and criminal justice, which were: Applied Social Sciences Index and Abstract (ASSIA), Criminal Justice Abstracts, Embase, Medline (OVID), National Criminal Justice Reference Service (NCJRS), Psycinfo, Pubmed, Social Services Abstracts, Sociological Abstracts, and Web of Science (WoS). The search combined research involvement-related terms AND context-related ones (see Table 1), with no date or language restrictions, and covered the full range of pub- lications up until 12th April 2019, with a second updated search from that date until 10th December 2020. Additional file 2 has an example of the search strategy used. The electronic search was supplemented by a compre- hensive hand-search, which involved reference mining, and searches using search engines, specialist prisoner researcher journals and PPI-specific journals, online resources or libraries related to prison(er)s or PPI, recommendations from academic networking sites, and directly contacting authors in the field. Stage 3: Study selection – inclusion and exclusion criteria Papers were selected for inclusion in this review if the following criteria were met informed by the People, Intervention, Comparator and Outcomes (PICO) for- mula (Richardson et al., 1995): (i) People: The research process has to involve people who are, or have been, in prison, which includes research conducted by prisoner-led organisations. The research process cannot include prison staff or any other individuals who have not served time in prison. (ii) Intervention (general): The overall research study has to focus on a health-related topic (including mental or physical health, public health or sub- stance misuse), or be conducted with a health- Table 1 Search terms used in electronic database search Research involvement-related terms Context-related terms PPI OR PPIE OR “Patient and Public Involvement” OR “prisoner advisor*” OR “participatory health research” OR “participatory action research” OR “participatory research” OR “community based participatory research” OR “service user advisory group” OR “peer research*” OR “advisory committee*” OR “emancipatory research” OR “user(engagement OR involvement OR participation OR representation)” OR “patient(engagement OR involvement OR participation OR representation)” OR “prisoner(engagement OR involvement OR participation OR representation)” OR “offender(engagement OR involvement OR participation OR representation)” Prison* OR Jail* OR Correctional* OR Penitentiar* OR Penal Treacy et al. Health and Justice (2021) 9:30 Page 3 of 21 related professional such as a mental health profes- sional, a general practitioner (physician) and more. Studies that focus on other prison-focused topics (such as education or regime) with no health focus will be excluded. (iii) Intervention (specific): The study will need to involve people currently in prison or those who have been in prison in the research process itself, and describe the type of involvement. This ‘involvement’ can be from any approach or theoretical tradition and can take any form. If PLiP or PFLiP’s involvement in the research is as ‘participant’ or ‘subject’ only, the study will be excluded. (iv)Comparator: Any or none. No papers will be excluded on this basis. (v) Outcomes: No papers will be excluded on the basis of this measure type; the review will chart whether there was an evaluation of PLiP involvement and the outcomes reported. The outcomes of the overall studies will not be reported. (vi)Context: The overall study has to be set in prison(s) and jails. If the overall health-related study is set in the community, or any other institution, it will be excluded. (vii)Other criteria (language): Include studies in English, French or Dutch. Exclude papers in all other languages. (viii)Other criteria (paper type): Only include ‘original’ empirical research of any design or methodology, and literature reviews. Exclude: commentaries, opinion pieces, newspaper and blog articles, conference abstracts and presentations. Each of the papers was screened by title and ab- stract by one researcher, and full-text screening was undertaken by two independent researchers and com- pared to check for inter-rater reliability (Rutter et al., 2010). Differences of opinion were discussed by the researchers and resolved between them. Papers were thus included if they presented health research in prison with PLiP or PFLiP undertaking any research activities as part of the study. Stage 4: Charting the data – data extraction One researcher extracted data from all of the pa- pers selected, with a second independent researcher extracting data from a third of the papers to check for consistency. Where differences arose, they were resolved between the researchers and consensus reached. Both researchers used an extraction tem- plate informed by the PICO formula, and included: author, date, country, overall study aim, aim of pris- oner involvement, type of PPI, sample description (if applicable), type of PLiP involved (serving or ex- prisoner), type of prison study situated in, PPI evalu- ation (whether and how), PPI outcomes on PLiP and research(er), obstacles and recommendations made for PLiP involvement. In addition, there was a section that required extracting data on the research activities which PLiP and PFLiP were involved in. This section combined and followed the categories of research activity suggested by INVOLVE (adapted by Jacobs et al., 2017) and the THIS Institute (Mar- janovic et al., 2019), which were conceptualisation, design, fund/commission, undertaking research, ana- lysis, dissemination, evaluation, and implementation. The activity categories were added to when other research-related activity recurred in a number of the papers. Stage 5: Collating, summarising and reporting results – data analysis The nature of the papers selected for this review pre- cluded any form of meta-analytic synthesis. The focus was on charting the involvement approaches and activ- ities as described in the papers, and a narrative approach was undertaken to synthesise the findings where re- ported (Popay et al., 2006) as these were wholly qualitative. Results The literature search returned 8880 papers of which 7733 remained after duplicates were removed. Following screening, thirty-nine papers were selected for inclusion in this scoping review, having met the requisite review criteria. The stages of the screening process undertaken to select the papers are depicted in Fig. 1. An overview of the included papers is given in Table 2, which is split between papers that used a broadly partici- patory approach to PLiP/PFLiP involvement (n = 24), and papers that used other approaches (n = 14). One review of the literature was also included. The table pre- sents the key features of each paper relating to PLiP/ PFLiP involvement as well as evaluation details, main findings and recommendations, where reported. The majority of the included papers were from the United Kingdom (n = 19) or North America (n = 17, 10 papers from Canada, 7 from the USA), with two more from Australia and one from Malaysia. It is of note that seven of the Canadian papers were generated around one research programme, and two further papers in- volved some of the same research team. Sixteen of the papers involved only PLiPs in the research process, four- teen included only PFLiPs, and eight involved both PLiPs and PFLiPs. The review paper did not appear to involve people who were or had been in prison in the re- view process. The numbers of PLiPs or PFLiPs involved in the papers ranged from two to approximately 200. Whilst sixteen papers did not report the gender Treacy et al. Health and Justice (2021) 9:30 Page 4 of 21 identities of the PLiPs or PFLiPs involved, and less re- ported on other demographic details, twelve papers in- volved females, seven involved males, and four papers included both males and females in the research process. In terms of payment, three studies reported that PLiPs (n = 1, paper 5) and PFLiPs (n = 2, papers: 28,36) were paid. A further four papers (papers 9–10,12,17), all from one research programme, described how involvement in the research team became a prison work placement, ul- timately resulting in payment at prison work rates. Research question one: what were the AIMS of involving people who were or had been in prisons in the research process? As shown in Table 2, the main aims of PLiP or PFLiP involvement were to make the research more ‘valid’, legible or applicable to prisoners (n = 19, papers5,6,8,10,15,18,20,21,23-28,30,32,35–37); to deter- mine the feasibility as well as benefits and challenges of PLiP or PFLiP involvement in the research process overall (n = 7, papers 3,5,11-13,16,22); to empower PLiPs or PFLiPs, advance social justice or detail commissioned prisoner-led work (n = 8, papers 1,5,9,14,19,25,35,38), and to increase the chances of research success or sustainability (n = 3, papers 4,26,28). Research question two: in what ways were people who were or had been in prison involved in the research process? PLiP or PFLiP involvement largely happened within a research-specific group, team or advisory panels, which mostly worked together with academic researchers (n = 26, papers 1–6,8-12,14-17,19,20,25,27–33). Six papers also detailed the involvement of PLiPs or PFLiPs on trial or project steering committees (papers 4,6,31-33,38), in an expert symposium and listening exercises (n = 1, paper 35); and as a co-applicant on projects (n = 2, paper 31,32). One study included was also entirely PFLiP-led and managed research (paper 38). Figure 2 shows how PLiPs or PFLiPs were involved in each part of the research process. The majority of papers involved PLiP or PFLiPs in generating ideas or, research questions or conceptualising the research and evaluation (n = 23). A very high number of papers involved people in research design (n = 32), predominantly in co- Fig. 1 PRISMA flow diagram Treacy et al. Health and Justice (2021) 9:30 Page 5 of 21 Ta b le 2 St ud y fe at ur es St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns (i) Pa rt ic ip at or y A pp ro ac he s 1 Bu ch an an et al ., 20 11 ; C an ad a To un de r- st an d PL iP s re as on s fo r su bs ta nc e m is us e So ci al ju st ic e, co lla bo ra tio n, in cr ea se se ns e of co nt ro l Pa rt ic ip at or y re se ar ch ; pe er re se ar ch er in he al th re se ar ch te am PL iP s & PF Li Ps n = 88 ,f em al e, si m ila r to pr is on er po pu la tio n, re po rt ed ly Fe m al e, m in / m ed iu m se cu rit y pr is on N o N on e re po rt ed N on e re po rt ed 2 C ra bt re e, O hm et al .; C ra bt re e, O hm ,e t al ., 20 16 U SA To ev al ua te an oc cu pa ti- on al th er - ap y pr og ra m m e N ot re po rt ed PA R m od el ; m et 3– 4 tim es pe r m on th PL iP s n = 3, m al e M al e m in im um se cu rit y pr is on N o (i) N on e re po rt ed ;( ii) re fle ct ed on po te nt ia lb ia s in an al ys is (a ca de m ic & pr is on er ) (i) bu re au cr ac y af fe ct ed pr is on er av ai la bi lit y; (ii ) no ne re po rt ed 3 C ra bt re e, W al le t al .; C ra bt re e, W al l, & O hm ,2 01 6; U SA To ev al ua te an oc cu p- at io na lt he r- ap y pr og ra m m e Re fle ct iv e ac co un t of PP I, be ne fit s & ch al le ng es PA R m od el ; m et 3– 4 tim es pe r m on th PL iP s n = 3, m al e, al l ha d co lle ge de gr ee s & ha d w or ke d as cl er ks M al e m in im um se cu rit y pr is on Ye s; cr iti ca l re fle ct io n; (i) an op po rt un ity ,h el pe d m ak e se ns e of pr is on ex pe rie nc e – a ‘p al lia tiv e’ ; re sp ec t, di gn ity & re la tio ns hi ps im po rt an t; em an ci pa to ry ;( ii) PA R te am as ‘p er fe ct st or m ’; m ut ua l le ar ni ng ;s ig ni fic an t pe rs on al & pr of es si on al im pa ct ; fu rt he re d ca us e of ‘o cc up at io na lj us tic e’ (i) po w er sk ew ed ;u na bl e to do in te rn et -b as ed re se ar ch ; bu re au cr ac y af fe ct ed pr is - on er & ro om av ai la bi lit y; (ii ) he lp s if ha ve pr e- ex is tin g tr us t; m in im um se cu rit y pr is on s; ex -p ris on er s fo r an a- ly si s; us e in -h ou se m es sa - gi ng sy st em to co m m un ic at e; m or e pa rt ic i- pa tio n; im po rt an t to se e ch an ge of fe el lik e a sy st em st oo ge . 4 C ur d et al .; C ur d et al ., 20 07 ; U SA Ev al ua tio n of w el ln es s in te rv en tio n in su bs ta nc e ab us e pr og ra m m e To en su re th e pr og ra m m e su cc es s & su st ai n- ab ili ty C BP R m od el – w el ln es s co m m itt ee , ev al ua tio n ad vi so ry pa ne l (E A P) PL iP s n = 2 on co m m itt ee ;n = 6– 8 in EA P, m al e M al e m in se cu rit y pr is on – TC N o (i) se ns e of ow ne rs hi p; (ii ) de ve lo pe d a m or e va lid in te rv en tio n (s oc ia lly & sc ie nt ifi ca lly ), in vo lv em en t in ad m in is tr at io n re lie ve d st af f bu rd en (i) st af f an d pr is on er tu rn ov er ,h ie ra rc hy ,s ca rc e re so ur ce s, po or da ta sy st em s; (ii ) ge t st af f bu y- in , es pe ci al ly se ni or s; in vo lv e in ad m in is tr at io n to re lie ve st af f bu rd en ;t ur no ve r ca n be an op po rt un ity to re fre sh if so m e ol de r m em be rs re m ai n; 5 Fi el ds et al .; Fi el ds et al ., 20 08 ; U SA To re fle ct on a se xu al ity fo cu se d pr og ra m m e Fo re gr ou nd pr is on er vi ew s; de te rm in e PA R fe as ib ili ty ; in cr ea se un de rs ta nd in g & va lid ity PA R - w or ks ho ps w ith ed uc at io n & re se ar ch PL iP s, & at le as t on e PF Li P n = 74 ,f em al e, av er ag e ag e 36 ye ar s (ra ng e 19 – 63 ), pr io rit y to w om en of co lo ur ;p ai d Fe m al e co un ty ja il, C A Ye s; re fle ct ed on pr oc es s th ro ug ho ut (i) in cr ea se d co nf id en ce , co m pa ss io n em pa th y, re sp ec t, op tim is m ;f el t va lu ed ;e xp lo re ow n lif e; us e in te lli ge nc e; (ii ) PA R in pr is on a “p ar tic ul ar ly lib er at or y ac t” (p g 80 ); ro le s ov er -la pp ed & ch an ge d; m ut ua ll ea rn in g; re se ar ch er s & in st itu tio ns al lc on tr ib ut e (i) po w er di ffe re nc es ; bu re au cr ac y af fe ct in g pr is on er av ai la bi lit y & in te rr up tin g pr oc es s; di ffi cu lt to pr om ot e se xu al ex pr es si on in op pr es si ve sy st em ;v ol un ta ry at te nd an ce m ay no t be po ss ib le ;( ii) tr ai ni ng ;d es ig n re se ar ch so w om en ca n di p Treacy et al. Health and Justice (2021) 9:30 Page 6 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns to fe m al e pr is on er is su es (e xp lo it or in se ns iti ve ); le ss ab ou t he al th is su e & m or e of re la tio ns hi ps ,& in eq ua lit y of ra ce & po ve rt y; ne ve r ga in ed fu ll tr us t – eq ua lit y el us iv e; im pr ov ed th e se rv ic e in & ou t bu t st ill co nt rib ut e (c yc lic al ); op po rt un iti es fo r pa id re se ar ch er ro le s on re le as e; 6 H at to n & Fi sh er ; H at to n & Fi sh er , 20 11 ; U SA To ex pl or e th e im pa ct of pr is on & co pa ym en t of fe es , on he al th To de sc rib e ho w PP I fa ci lit at ed un de rs ta nd in g C BP R – fo rm ed co m m un ity ad vi so ry bo ar d (C A B) PF Li Ps N = 3, C A B m em be rs Fe m al e pr is on N o (i) st re ng th en ed ca se of pr is on ad vo ca te s; (ii ) in cr ea se cr ed ib ili ty of re se ar ch to pr is on er s; pr is on er s as br id ge in co m m un ic at io ns w ith pr is on er s; vi ta li n an al ys is ; bu ild s kn ow le dg e & ev id en ce (i) on ly in cl ud ed ex - pr is on er s as m in im is ed fu r- th er re se ar ch ob st ac le s & st af f re tr ib ut io n; (ii ) he lp if ha ve po si tiv e pr e- ex is tin g re la tio ns hi p; us e of ex - pr is on er s an d co nf id en tia lit y ce rt ifi ca te s 7 H at to n et al .; H at to n et al ., 20 06 ; U SA To ex pl or e pr is on er he al th pr ob le m s & ca re N ot re po rt ed Pa rt ic ip at or y re se ar ch in co lla bo ra tio n w ith an N G O in cl ud in g ex - pr is on er s PF Li Ps fro m lo ca lN G O N ot re po rt ed Fe m al e co un ty pr is on , W es te rn U SA N o N on e re po rt ed (i) no ne re po rt ed ;( ii) tr ai ni ng on fo cu s gr ou p fa ci lit at io n 8 Ke nd al l et al ., Ke nd al l et al ., 20 20 , A us tr al ia Ex pl or e ex pe rie nc es of ac ce ss in g he al th ca re an d lim ita tio ns of ‘e qu al tr ea tm en t’ En su re re se ar ch & co m m un ity pr io rit ie s m es h; us e va lid co nc ep ts , es ta bl is h an ad vi so ry gr ou p C om m un ity co lla bo ra tiv e pa rt ic ip at or y ac tio n re se ar ch PL iP s Fo rt y- th re e A bo rig in al w om en U rb an an d re gi on al pr is on s in N SW N o N on e re po rt ed N on e re po rt ed 9 M ar tin , A da m so n et al .; M ar tin et al ., 20 13 C an ad a To ev al ua te th e pi lo t of a fit ne ss pr og ra m m e To de si gn ,l ea d & ev al ua te PA R – pa rt ic ip at or y re se ar ch te am le d by pr is on er PL iP s N ot re po rt ed , fe m al e Fe m al e, m in / m ed iu m se cu rit y pr is on N o (i) re se ar ch er s w or ki ng in co m m un ity on re la te d w or k, po st -r el ea se ;( ii) re su lta nt pr og ra m m e de si gn ed & im - pl em en te d by pr is on er s, a st re ng th N on e re po rt ed 10 M ar tin , Ko rc hi ns ki et al .; M ar tin et al ., 20 17 ; C an ad a Te am re fle ct io n on pr is on er pa rt ic ip a- tio n PP Ii nv ol ve d co lla bo ra -t io n ac ro ss th e w ho le pr oj ec t PA R – re se ar ch te am pr is on er - le d PL iP s & PF Li Ps N ot re po rt ed Fe m al e pr ov in ci al pr is on Ye s, re fle ct io n (i) he al in g/ tr an sf or m at iv e, gi vi ng ba ck ;c on tin ue d w ith in te rv en tio ns po st -r el ea se ; (ii ) ch an ge ca n ha pp en w he n co lla bo ra te ;a lte re d pe rs on al ly & pr of es si on al ly ; ne w kn ow le dg e & re la tio n- sh ip s; m ut ua ll ea rn in g; in tr o- du ce d sp iri tu al he al th as a (i) re se ar ch en de d w he n pr is on w ar de n re tir ed ;( ii) ne ed fo r se ni or st af f bu y- in Treacy et al. Health and Justice (2021) 9:30 Page 7 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns fa ct or ; 11 M ar tin , M ur ph y, C ha n et al .; M ar tin , M ur ph y, C ha n, et al ., 20 09 ; C an ad a To ex pl or e pr is on er s’ he al th is su es Fe as ib ili ty of do in g PA R in pr is on ; re se ar ch de si gn & co nd uc t C BP R & tr an sf or m at iv e ac tio n re se ar ch te am PL iP s n = 12 0 at a gr ou p ev en t, fe m al e Fe m al e, m in / m ed iu m se cu rit y pr is on N o (i& ii) au th or s re po rt ed it w as he al in g & tr an sf or m at iv e fo r al l; (ii ) fe as ib le fo r pr is on er s to do re se ar ch ;m ut ua l le ar ni ng ;m an y qu es tio ns an d po ss ib le in te rv en tio ns su gg es te d, pr is on el de rs ca n ‘c on tr ol ’g ro up s be tt er (i) no ne re po rt ed ;( ii) tr ai ni ng in tr an sc rip tio n; im po rt an ce of w ar de n su pp or t 12 M ar tin , M ur ph y, H an so n, et al ., 20 09 ; C an ad a To ex pl or e pr is on er ’s he al th is su es & go al s D es cr ip tio n of a PA R pr oc es s; de si gn & de ve lo p re se ar ch Pa rt ic ip at or y ac tio n re se ar ch te am PL iP s & PF Li Ps n = 19 0 ac ro ss th e pr oj ec t lif e sp an ,f em al e Fe m al e, m in / m ed iu m se cu rit y pr ov in ci al pr is on Ye s, re fle ct - io n & qu al i- ta tiv e an al ys is (i) m ea ni ng fu l, su pp or tiv e; in cr ea se d ho pe ,c on fid en ce , co m m un ic at io n & tr an sf er ab le sk ill s; al te re d pe rs pe ct iv e; (ii ) pr is on as a go od pl ac e to do pa rt ic ip at or y w or k; ch al le ng ed re du ct io ni st co nc ep tio ns of he al th – m or e ho lis tic ,i de as la rg er in sc op e; le ar n pr oc es s by do in g (i) la ck of st af f bu y- in ;l ac k of fu nd in g; pr is on er tu rn - ov er ;( ii) tr ai ne d to tr an - sc rib e; em ph as is e va lu es an d ta rg et s in co m m on be - tw ee n st af f an d re se ar ch – es pe ci al ly se ni or ;h el pf ul to ha ve a re se ar ch as si st an t su st ai n fo cu s in m id st of pr is on er ch an ge s 13 M ar tin , Tu rn er et al .; M ar tin et al ., 20 18 ; C an ad a Th e fe as ib ili ty of im pl em en tin g H IV pr ev en tio n in pr is on Fe as ib ili ty of re se ar ch ;V ie w s on fu tu re pr oj ec ts ,b ui ld ca pa ci ty & pa rt ne rs hi p C om m un ity - Ba se d Re se ar ch (C BR ) PL iP s & PF Li Ps n = 12 ;3 A bo rig in al , av er ag e ag e 50 ye ar s (ra ng e 30 – 65 ) M al e, m ed iu m se cu rit y fe de ra lp ris on , W es t C an ad a N o (i) in cr ea se em pa th y & sh ar in g, he lp in g ot he rs ;( ii) pa rt ic ip at or y w or k fe as ib le ; pr is on er in vo lv em en t in cr ea se d up ta ke of un po pu la r se rv ic e (i) pr is on er s la ck tr us t; (ii ) if su bj ec t is im po rt an t en ou gh ,m en w ill en ga ge ; co m bi ni ng pr of es si on al an d pr is on er -le d se ss io ns ;u se of tu to r w ith pe rs on al ex pe ri- en ce of to pi c 14 M cL eo d et al ., M cL eo d et al ., 20 20 , C an ad a D es cr ib e a pe er he al th m en to rin g pr og ra m fo r re le as ed w om en C re at e so ci al ac tio n; im pr ov e qu al ity of lif e Pa rt ic ip at or y he al th re se ar ch fra m ew or k PF Li Ps 34 0 w om en C or re ct io na l Fa ci lit y fo r W om en , C an ad a N o N on e re po rt ed N on e re po rt ed 15 M ey er & Fe ls ; M ey er & Fe ls ,2 00 9; C an ad a To ex pl or e pr is on er he al th is su es Re fle ct io n on th e pr oj ec t; fo cu s on an al ys is PA R - te am PL iP s N ot re po rt ed , fe m al e Fe m al e pr is on N o (i) re po rt ed ly em po w er ed ; tr an sf er ab le sk ill s; (ii ) be tt er un de rs ta nd in g to an al ys is – th at w hi ch is no t un de rs ta nd ab le ou ts id e; im pa ct s on ro le s an d w ay th ey re se ar ch se e in st itu tio ns ;w om en kn ow w ha t th ey ne ed (i) po w er di ffe re nc es ;b ia s to w ar ds re se ar ch er in te rp re ta tio n; pr oj ec t cl os ed w he n w ar de n le ft ;( ii) su pp or t of pr is on w ar de n; fo llo w pr is on er s w he n th ey al te r fo cu s – al lo w to ch an ge sc op e & fo cu s, an d be ‘o th er ’; lis te n; pr is on st af f to he ar pr is on er st or ie s; no t ab ou t te ac hi ng w om en ,b ut en ga gi ng Treacy et al. Health and Justice (2021) 9:30 Page 8 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns 16 Pe rr et t et al ., Pe rr et t & G ra y, 20 20 , U K To re po rt on w or k un de rt ak en w ith PL iP s on he al th & w el lb ei ng ,a nd pr oc es s of pe er re se ar ch Ex pl or e fe as ib ili ty of PL iP s as pe er re se ar ch er s as pa rt of ed uc at io na l in iti at iv e Pa rt ic ip at or y A ct io n Re se ar ch (P A R) PL iP s 15 4 m en on th e vu ln er ab le pr is on er s un it Lo ng st ay pr iv at e pr is on in W al es ,U K Ye s, re fle ct io n fro m on e pe er re se ar ch er on ly (i) Es ta bl is hm en t of th e pr oj ec t, da ta co lla tio n an d di re ct co m m un ic at io n w ith m an ag em en t em po w er in g; en ab le d ac ce ss tr ai ni ng an d ed uc at io n, le ar ni ng ne w sk ill s; al te re d po w er ba la nc e; in te re st in g an d m ot iv at in g (ii ) fin di ng s m or e re pr es en ta tiv e; fa ci lit at ed al l- pr is on ap pr oa ch to w el l- be in g; se ni or m an ag em en t m ad e aw ar e of is su es (i) pr oc es s w as lo gi st ic al ly co m pl ic at ed ;f oc us gr ou ps ne ga tiv el y af fe ct ed by st af fin g an d re gi m e ch an ge s (in c. ca nc el la tio ns , ne ed fo r es co rt s) ;l im ite d ac ce ss to IT ca us in g lo ts of di ffi cu lty ; (ii ) bu ild in im pa ct ev al ua tio n fro m th e st ar t; go od pr is on st af f-p ro je ct st af f co m m un ic at io n ne ed ed ;s ta ff bu y- in ke y at al ls ta ge s, es pe ci al ly m an - ag em en t su pp or t 17 Ra m sd en et al .; Ra m sd en et al ., 20 15 ; C an ad a To ex pl or e w ay s to im pr ov e pr is on er he al th & w el lb ei ng A n an al ys is of pr is on er ’s w rit in g C BP R & tr an sf or m at iv e ac tio n re se ar ch ;p ee r re se ar ch er s - te am - te am PL iP s & PF Li Ps n = 20 0 ap pr ox ; 39 % < 30 ye ar s Fe m al e, m in / m ed iu m se cu rit y pr is on Ye s, re fle ct - io n (i) re po rt ed ly tr an sf or m at iv e & em po w er in g; tr an sf er ab le sk ill s; se ns e of pu rp os e; op tim is tic ;p la nn in g fu tu re s; (ii )s ha re d kn ow le dg e va lu ed by pr is on co m m un ity & co nt rib ut or s (i) no ne re po rt ed ;( ii) fe ed ba ck on re se ar ch to pr is on & co nt rib ut or s – cr ea te s re la tio ns hi ps ; in vo lv em en t be ca m e a w or k pl ac em en t, so co ul d be pa id ;p ris on er s al lo w ed in te rn et ac ce ss - co ul d co nt rib ut e to lit er at ur e re vi ew s 18 Sh er w oo d & Ke nd al l, 20 13 ; A us tr al ia To ex pl or e th e ‘S oc ia l& C ul tu ra l Re si lie nc e & Em ot io na l W el lb ei ng of A bo rig in al M ot he rs in Pr is on ’p ro je ct D es cr ip tio n of th e pa rt ic ip at or y ap pr oa ch ; fe ed ba ck on re se ar ch m at er ia l C om m un ity C ol la bo ra tiv e PA R m od el PF Li Ps N ot re po rt ed ,a ll pr is on er s A bo rig in al n = 3; al l pr is on s in N ew So ut h W al es ho ld in g w om en N o N on e re po rt ed N on e re po rt ed 19 Su lli va n et al ., 20 08 ; U K To ex pl or e re la ps e pr ev en tio n; ev al ua te re la ps e pr ev en tio n co ur se Pr is on er -le d ca m pa ig n, as si st ed by re se ar ch er PA R – m em be r of ac tio n re se ar ch gr ou p: Br ea ki ng th e C ha in ’ PL iP s n = 8; al lm al e, al lw in g dr ug re pr es en t- ta tiv es H M P G re nd on : C at B m al e pr is on ,w in gs ru n as TC s Ye s, re fle ct io n (i) en jo ye d su cc es s & pr oc es s; in cr ea se d co nf id en ce ,c ar in g, em po w er m en t; op in io ns va lu ed ;b ut ,a ng er & di si llu si on m en t w he n st af f no t in te re st ed in fin di ng s; (ii ) ha ve kn ow le dg e of sy st em ;j us t a gr ou p m em be r; di ffi cu lt w he n gr ou p an gr y, bu t ot he r gr ou p m em be rs he lp ed gr ou p m ov e on (i) po w er di ffe re nc es ;l ac k of st af f in te re st ;c om pu te r ac ce ss ,s ec ur ity is su es & un re as on ab le in te rn al de ad lin es lim ite d pr is on er au th or sh ip ;( ii) in iti al ly ac ad em ic re se ar ch er s m ay ne ed to ta ke a m or e fa ci lit at iv e an d ad m in is tr at iv e ro le ;( ii) ge t st af f bu y- in ;n eg ot ia te se cu r- ity & ac ce ss is su es at ea ch pr is on lo ca lly Treacy et al. Health and Justice (2021) 9:30 Page 9 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns 20 To w ns en d To w ns en d, 20 01 ; M al ay si a To ex pl or e w ay s to im pr ov e ca re fo r pe op le w ho ar e H IV + To ge ne ra te id ea s to im pr ov e ca re & su pp or t Pa rt ic ip at or y as se ss m en t pr oc es s, Pa rt ic ip at or y Le ar ni ng & A ct io n to ol s – fo rm ed gr ou ps PL iP s Pr is on 1: n = 8; fe m al e; Pr is on 2: n = 12 ,m al e, Pr is on 3: n = 30 , m al e; al lH IV + st at us N = 3; Pr is on 1: fe m al e pr is on ; Pr is on s 2 & 3: m al e pr is on s N o (i) st im ul at in g, di ve rt in g, pr es tig io us ;( ii) tr us t, ra pp or t, m ot iv at es ; re pr es en ta tiv en es s of pr is on er s on ly se m i-s o; gr ou p au to no m y im po rt an t; pa rt ic ip at or y pr oc es s ke y, bu t “a de gr ee of m et ho do - lo gi ca lc om pr om is e w ill pr ob ab ly be in ev ita bl e” (p g 10 ) (i) pr is on ne ed s, ra th er th an pr is on er s’, di ct at ed th e re se ar ch ;i nt er - an d in tr a- gr ou p dy na m ic s ca n ne ga - tiv el y im pa ct pr oc es s; re - se ar ch er ac ce ss lim ite d; bu re au cr ac y lim its ;( ii) de - em ph as is e go al s of so ci al ch an ge to of fic ia ls ;m an ag e gr ou p dy na m ic s; pr is on er gr ou ps ne ed to be co m e au - to no m ou s qu ic kl y; co m pr es s re se ar ch ac tiv ity as m uc h as po ss ib le ;m an ag e pr is on er ex pe ct at io ns ;d o no t cu rt ai l fre ed om s 21 W ar d & Ba ile y, 20 11 ;U K To de ve lo p a se lf- ha rm tr ai ni ng pa ck - ag e fo r st af f To id en tif y st af f tr ai ni ng ne ed s, an d w ay s to ad dr es s th em PA R PL iP s M ap pi ng (n = 9) ; gr ou p (n = 16 – 20 ); in te rv ie w s (n = 15 ); su rv ey s (n = 50 ); fe m al e; m ea n ag e 36 yr s. (ra ng e 18 –5 8) Fe m al e pr is on , En gl an d N o (i) ho pe th er e w er e be ne fit s in ef fe ct in g ch an ge ;( ii) ke y in id en tif yi ng kn ow le dg e ga ps ;P A R im po rt an t if tr yi ng to ha ve an eq ui va le nc e be tw ee n he al th ca re re se ar ch in th e co m m un ity an d pr is on (i) pr is on er s in vo lv ed m ay no t be re pr es en ta tiv e – al th ou gh no t a si gn ifi ca nt is su es ;( ii) no ne re po rt ed 22 W ar d & Ba ile y, 20 12 ;U K To de ve lo p se lf- ha rm ca re pa th w ay s Ex am in e et hi ca l di le m m as of th e re se ar ch PA R PL iP s n = 2, fe m al e Fe m al e pr is on , En gl an d Ye s. Re fle ct io n (i) ch an ge sh ou ld di re ct ly be ne fit ;o pt im is m , co nf id en ce ,i ns ig ht ,g oo d to he lp ot he rs & sh ar e; co nc er ns re pr iv ac y al la ye d; em po w er in g, gi ve s ag en cy ; (ii ) po si tiv e ex pe rie nc e; PA R as go od w ay to de ve lo p se rv ic es (i) bu re au cr ac y af fe ct s ac ce ss ;p ot en tia lf or ‘v ic ar io us ’t ra um a; co er ci on pr ob le m at ic ;d ile m m a of pa ym en t; ca n’ t of fe r fu ll co nf id en tia lit y; bu dg et cu ts de -p rio rit is ed re se ar ch ;( ii) ge t un es co rt ed pr is on er ac - ce ss ;s up er vi si on & oc cu pa - tio na lh ea lth ac ce ss ;b al an ce ne ed s & co m pr om is e – pi ck ba tt le s th at ar e m os t im - po rt an t to pr is on er s an d st af f; ta ke tim e w ith in - fo rm ed co ns en t; tr an sp ar - en cy in re po rt in g 23 W ar d & Ba ile y, 20 13 ;U K To de ve lo p se lf- ha rm ca re pa th w ay s To id en tif y se rv ic e ga ps & st af f tr ai ni ng ne ed s PA R PL iP s M ap pi ng (n = 9) ; gr ou p (n = 16 – 20 ); in te rv ie w s (n = 15 ); qu es tio nn ai re s (n = 50 ); fe m al e; m ea n ag e 36 Fe m al e pr is on , En gl an d N o (i) re po rt ed ly em po w er in g; (ii ) pr is on er s ta ke a m or e ho lis tic ap pr oa ch ;P A R ca n cr ea te ch an ge an d w or k as w el la s in th e co m m un ity , de sp ite la ck of po lic y su pp or t (i) po w er di ffe re nc es le d to no t tr ai ni ng pr is on er s as re se ar ch er s; (ii ) fin d ot he r w ay s to in vo lv e pr is on er s th an tr ai ne d re se ar ch er s Treacy et al. Health and Justice (2021) 9:30 Page 10 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns ye ar s (ra ng e 18 – 58 ) 24 W ar d, Ba ile y & Bo yd ;W ar d & Ba ile y, 20 12 ;U K To im pr ov e ou tc om es fo r pe op le w ho se lf- ha rm To id en tif y ne ed s re ga rd in g st af f tr ai ni ng PA R PL iP s N ot re po rt ed , fe m al e Fe m al e pr is on , En gl an d Ye s, on e pr is on er s’ re fle ct io ns (i) in cr ea se d co nf id en ce , in si gh t; al te re d st af f be ha vi ou r po si tiv el y; po si tiv e to se e ch an ge s, bl ur re d pr is on er -s ta ff di vi de ; (ii ) PA R po ss ib ly be ne fic ia l to st af f & pr is on er s (i) po w er di ffe re nc es ;a nd co nc er ns ab ou t ‘te ac hi ng ’ st af f as a po te nt ia lp ro bl em ; (ii ) no ne re po rt ed (ii ) O th er ap pr oa ch es 25 A nt on io u et al ., A nt on io u et al ., 20 19 , C an ad a To id en tif y th e m ai n ba rr ie rs to en ga gi ng w ith H IV -r el at ed m ed ic al & so ci al ca re po st -r el ea se To in fo rm pr og ra m m e de si gn ,a nd gi ve pe op le a vo ic e in re se ar ch an d pr og ra m m e C on ce pt m ap pi ng PF Li Ps w ith H IV 39 pa rt ic ip an ts n/ a N o (i) N ot re po rt ed (ii ) A na ly si s oc cu rr ed in re al - tim e w ith co nc re te re co m - m en da tio ns ra th er th an la te r an d re se ar ch er on ly ; fin di ng s in fo rm ed de ve lo p- m en t of a pr og ra m m e fo r fo rm er ly in ca rc er at ed pe op le w ith H IV . N on e re po rt ed 26 A pa et al .; A pa et al ., 20 12 ; U SA To ex pl or e ris k fa ct or s fo r sp re ad of st ap h in fe ct io n To ge t fe ed ba ck & in cr ea se su pp or t fo r th e st ud y N o ap pr oa ch re po rt ed PL iP s N ot re po rt ed n = 2, m ax se cu rit y, fe m al e & m al e N o (i) no ne re po rt ed ;( ii) co lla bo ra tio n w ith pr is on er gr ou ps ca n in cr ea se st ud y su pp or t (i) no ne re po rt ed ;( ii) us ef ul to w or k w ith gr ou ps th at re pr es en t pr is on er s in pr is on 27 A w en at et al .; A w en at et al ., 20 17 ; U K RC T of su ic id e pr ev en tio n th er ap y To ex am in e pr is on er s’ ex pe rie nc e; to im pr ov e st ud y’ s ‘e co lo gi ca l va lid ity ’ Ba se d on IN VO LV E m od el ; m on th ly Se rv ic e U se r Re se ar ch G ro up (S U RG ) m ee tin gs PF Li Ps n = 4; 2 m al e, 2 fe m al e; “m ix ed et hn ic ity ”; ag e ra ng e 40 –6 0 ye ar s M al e pr is on s – ov er al ls tu dy Ye s. Q ua li- ta tiv e; in te r- vi ew s, IP A an al ys is (i) po si tiv e to ef fe ct ch an ge , sh ar e id ea s; m ut ua lr es pe ct , fe lt va lu ed ,m ak e go od of ba d & gi ve ba ck ,p os iti ve ch an ge in se lf- pe rc ep tio n & pe rc ep tio n by ot he rs ;i m - pa ct ed de si st an ce ;o ne m em be r re po rt ed lit tle im - pa ct ;( ii) gu id ed st ud y am en dm en ts – im pr ov ed qu al ity ;m ay be m or e im - po rt an t fo r ex -p ris on er s be - ca us e of st ig m at is ed id en tit ie s (i) no ne re po rt ed ;( ii) tr ai ni ng – si x- da y M as te r’s le ve lr es ea rc h m od ul e; ho n- or ar y un iv er si ty co nt ra ct s an d st af f ca rd s; po si tiv e re la - tio ns hi ps w ith ac ad em ic re - se ar ch er ke y; op en fe el in g to m ee tin gs so fre e to sh ar e vi ew s 28 By ng et al .; By ng et al ., 20 12 ; U K To ex pl or e co nt in ui ty of ca re ,& im pr ov em en ts To in cr ea se ac ce ss to pa rt ic ip an ts , m ak e re se ar ch & m at er ia ls m or e le gi bl e N o ap pr oa ch re po rt ed ;p ee r re se ar ch er s - O ffe nd er Re se ar ch G ro up PF Li Ps n = 13 ;p ai d Va rio us -n ot re po rt ed Ye s, cr iti ca l re fle ct io n (i) so m e fe lt va lu ed ,m or e co nf id en t & op tim is tic ,l es s is ol at ed ;t ra in in g le d to co nf id en ce ;( ii) st re ng th en ed pr oc es s – “s ub tle fu si on of id ea s th ro ug ho ut ” (p g 18 8) (i) di ffi cu lti es se tt in g up re se ar ch gr ou ps in pr is on ; un iv er si ty bu re au cr ac y in hi rin g ex -p ris on er s le d to so m e dr op pi ng ou t; di ffi - cu lty m an ag in g gr ou p dy - na m ic s; (ii ) al lo ca te en ou gh Treacy et al. Health and Justice (2021) 9:30 Page 11 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns tim e; pa y re se ar ch er s & ha ve a le ad ;t ra in in g 29 C or ni sh et al ., 20 16 ; U K To ex am in e ol de r pr is on er ex pe rie nc es of re le as e N ot re po rt ed N o ap pr oa ch re po rt ed – O ld er pr is on er us er s’ gr ou p PF Li Ps N ot re po rt ed n = 5 N o (i) no t re po rt ed ;( ii) pr is on er s ex pe rie nc es he lp fu li n ex pl or in g th e ex pe rie nc es of pe er s (i) no ne re po rt ed ;( ii) tr ai ni ng to co nd uc t in te rv ie w s 30 Ed ge et al ., Ed ge et al ., 20 20 , U K To de ve lo p an un de rs ta nd in g of eq ui va le nc e vi a ac co un ts of PL iP s se co nd ar y (h os pi ta l) ca re ex pe rie nc e To en su re m et ho ds ar e ac ce pt ab le ;t o cl ar ify te rm in ol og y Pe er -le d re se ar ch (a pp ro ac h no t de fin ed ) PF Li Ps fro m a pr is on ch ar ity N -4 5. Fo cu s gr ou ps (n = 5) an d 1: 1 in te rv ie w s (n = 17 ) Fi ve En gl is h pr is on s – m al e & fe m al e. N o (i) N ot re po rt ed (ii ) Be lie ve d pa rt ic ip an ts m or e em po w er ed & ga ve m or e ho ne st ac co un ts ; te rm in ol og y cl ar ifi ed ; en su re d m et ho ds ac ce pt ab le .B ut ,l ac k of ex pe rie nc e an d us e of ow n ex pe rie nc es m ay ‘le ad ’ pa rt ic ip an ts N on e re po rt ed 31 Fo rs yt h et al ., 20 17 ; U K To st ud y th e ef fe ct iv e- ne ss of a he al th & so ci al ca re as se ss m en t & pl an - ni ng to ol fo r ol de r pr is on er s N ot re po rt ed N o ap pr oa ch re po rt ed . A ct io n le ar ni ng gr ou p; ex - pr is on er co - ap pl ic an t; tr ia l st ee rin g co m - m itt ee m em be rs PL iP s in gr ou p; PF Li Ps on co m m itt ee & co - ap pl ic an t G ro up = un re po rt ed ;c o- ap pl ic an t= 1; co m m itt ee m em be r= 2 G ro up ,n = 1; n = 10 in ov er al ls tu dy - fro m op en to tr ai ni ng to hi gh se cu rit y N o (i) re po rt ed ly va lu ed co nt rib ut in g to ch an ge ;( ii) va lu ed by te am ac ro ss th e st ud y N on e re po rt ed 32 Fo rs yt h et al ., Fo rs yt h et al ., 20 20 , U K To es ta bl is h pr ev al en ce of de m en tia an d m ild co gn iti ve im pa irm en t in pr is on er s in En gl an d an d W al es an d th ei r he al th an d so ci al ca re ne ed s To gi ve in pu t to st ud y pr op os al ,a nd ad vi ce th ro ug ho ut ; en su re co ns id er ne ed s of ol de r pe op le PP I PF Li Ps O ne PF Li P w as a co -a pp lic an t; w ith a fu rt he r re - se ar ch gr ou p of fo ur PF Li Ps in vo lv ed 77 pr is on s in En gl an d an d W al es – m ix ed es ta bl is hm en ts N o (i) PF Li Ps re po rt ed ly w el co m ed re se ar ch , be lie vi ng it to fe ll a ga p an d he lp w ith se rv ic e de ve lo pm en t (ii ) In pu t to re se ar ch de si gn w as us ef ul ;i np ut to de ve lo pm en t of tr ai ni ng an d in te rv en tio n co ns id er ed m ea ni ng fu l N on e re po rt ed 33 H as sa n et al ., 20 14 ; U K To ex pl or e pr ev al en ce & ac ce pt -a bi lit y of ps yc ho -t ro pi c m ed i- ca tio n pr es cr ib in g N ot re po rt ed N o ap pr oa ch re po rt ed . M on th ly re se ar ch ad vi so ry gr ou p PF Li Ps N = 7 re gu la r m em be r; m al e & fe m al e; al lu se d pr is on he al th ca re n- 11 in st ud y; m al e & fe m al e N o (i) im pr ov ed co nf id en ce , co m m un ic at io n & ne tw or ks ; ac ce ss ed tr ai ni ng ;( ii) ‘P ro ve d’ po ss ib le to ha ve a gr ou p of ex -p ris on er s w or k ac ro ss th e lif es pa n of a st ud y ad vi ce on sy st em & re cr ui tm en t in va lu ab le ; m ad e re se ar ch m or e ef fe ct iv e (i) di ffi cu lti es re cr ui tin g le d to de la ys in pr oj ec t; te am ch an ge s; sk ill m ix ;( ii) ac ce ss to tr ai ni ng ;c ol la bo ra tin g w ith de pa rt m en ts w ith PP I ex pe rie nc e he lp ed re cr ui tm en t; ha ve gr ou p te rm s of re fe re nc e & co de s of co nd uc t; ex pl ai n & cl ar ify ev er yt hi ng as di ffe rin g sk ill s; Treacy et al. Health and Justice (2021) 9:30 Page 12 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns al lo ca te en ou gh tim e & re so ur ce s; ha ve ad m in is tr at iv e he lp 34 H ow er to n et al ., 20 09 ; U K To ex am in e in flu en ce s on pr is on er s se ek in g he lp fo r m en ta l he al th pr ob le m s on re le as e N ot re po rt ed N o ap pr oa ch re po rt ed . C ol la bo ra te d w ith an N G O ’s us er gr ou p PF Li Ps N ot re po rt ed M al e, C at B pr is on ,S ou th En gl an d N o N on e re po rt ed N on e re po rt ed 35 So ut h et al ., 20 14 ; U K To sy st em at ic al ly re vi ew pr is on er pe er he al th pr og - ra m m es O pp or tu ni ty fo r di al og ue ,& ap pl ic at io n of fin di ng s PP I– ex pe rt sy m po si um (la y ex pe rt s) ,& lis te ni ng ex er ci se s PF Li Ps : sy m po si um & lis te ni ng ex er ci se ; PL iP s: lis te ni ng ex er ci se Sy m po si um : un re po rt ed ; Li st en in g ex er ci se s = 8 pe r pr is on ap pr ox .; al lp ee rs or pe er su pp or te d n = 3: C at B lo ca l, hi gh se cu rit y & fe m al e pr is on ; in N W En gl an d N o (i) no t re po rt ed ;( ii) PP Ia s in te gr al ;s ym po si um ad de d co nt ex t, le d to a va rie ty of gr ey lit er at ur e & in te rv en tio n ty pe s (i) un ab le to ha ve se rv in g pr is on er s at pu bl ic m ee tin gs ,s o ex cl ud ed fro m sy m po si um ;q ue st io ns ar ou nd re pr es en ta tiv en es s w he n pr is on er s se le ct ed by st af f; (ii ) no ne re po rt ed 36 Ta yl or et al ., 20 18 ; U K RC T fo r a m en ta l he al th in te rv en tio n To pr es en t w ay s pr is on er s in vo lv ed ;t o co nt rib ut e to de si gn & de liv er y PP I– pe er re se ar ch er s; fo rt ni gh t gr ou p PF Li Ps n = 8 – ro lli ng m em be r- sh ip ; m al e; ag ed 25 – 56 ye ar s, pa id n/ a Ye s, re fle ct - io n (i) in cr ea se d co nf id en ce to m ak e ch an ge – ai de d re co ve ry ,s ki lls & kn ow le dg e; di d no t fe el ju dg ed ;c ar ed fo r, va lu ed ,p ur po se fu l, m ak in g go od of ba d; (ii ) ex - pr is on er s ca n do & de ve lo p re se ar ch ,i nt er ve nt io ns & th eo ry ;f oc us gr ou ps – m or e en ga ge d; an al ys is – m or e de pt h; in te rv en tio n m or e ap pl ic ab le ;h el pe d ex pl ai n pu rp os e be tt er ;d es k- ba se d re se ar ch er s ha d co nt ac t w ith st ud y po pu la tio n; em ph as is ed im po rt an ce of fa m ily – an d so ne w as pe ct to st ud y (i) co nf lic t ov er na m e/ im ag e us e w he n di ss em in at in g – ac kn ow le dg em en t v fu tu re di ffi cu lti es ;( ii) co m m itt ed , sk ill ed te am ;f un di ng ,s ta ff & sy st em to pa y re se ar ch er s in ca sh ;s ta ff to m ai nt ai n te am co nt ac t in cl ud in g re tu rn s to pr is on ;m ee tin gs in ne ut ra l pl ac e, re la xe d, in cl us iv e an d re gu la r – in te ns iv e bu rs ts ; ro lli ng m em be rs hi p; en d da te cl ea r; ce le br at e su cc es s & in vi te fa m ily in ;c on tin ua l fe ed ba ck ;u se a pe er re se ar ch er la be lo n m at er ia ls ;c om pr om is e on na m e/ im ag e us e; su pp or t pr is on er s’ pl an s; un de rs ta nd ro le of pe er re se ar ch er s to ch al le ng e. 37 Tr ea cy et al ., 20 19 ; U K To ev al ua te de m en tia fri en dl y co m m un ity ap pr oa ch To as se ss ne ed fo r de m en tia in iti at iv es ; m at er ia l al te ra tio ns PP I PL iP s n = 46 (p ris on A = 16 ;p ris on B = 30 ); al lm al e n = 2, ;C at C se x of f-e nd er & lo ca l pr is on s, m al e N o (i) no ne re po rt ed ;( ii) pr is on er in pu t in va lu ab le in in vo lv ed st ud y ta sk s (i) di ffi cu lti es in vo lv in g pr is on er s liv in g w ith de m en tia ;( ii) no ne re po rt ed 38 U se r Vo ic e; , 20 16 ;U K To ex pl or e ex te nt of ‘sp ic e’ us e & lin ke d pr ob le m s Th e st ud y w as m an ag ed an d le d by a pe er - le d Pe er -le d re se ar ch ,s o no ap pr oa ch as su ch PF Li Ps m os tly ; PL iP s fo r so m e ta sk s n = 9; C at C pr is on er s, En gl an d; ge og ra ph y- ic al ly n/ a N o (i) no t re po rt ed ;( ii) m or e lik el y to in cr ea se tr us t, ra pp or t & in si gh ts fro m pr is on er s if sp ea ki ng to N on e re po rt ed Treacy et al. Health and Justice (2021) 9:30 Page 13 of 21 Ta b le 2 St ud y fe at ur es (C on tin ue d) St ud y N o A ut ho r; Y ea r; C ou nt ry St ud y ai m PP Ia im or PP Ip ap er ai m PP It yp e Ty p e of p ri so ne r Sa m p le si ze & ty p e Pr is on ty p e Ev al ua ti on & ty p e O ut co m es (i) Pr is on er s (ii ) Re se ar ch (e rs ) (i) O b st ac le s & (ii ) re co m m en d at io ns or ga ni sa tio n re pr es en t- at iv e so m eo ne fro m a si m ila r ba ck gr ou nd (ii i) Re vi ew 39 Sa m el e et al ., 20 08 ; U K A re vi ew of pr is on er in vo lv em en t in m en ta lh ea lth re se ar ch N ot re po rt ed N ot re po rt ed N ot re po rt ed N ot re po rt ed n/ a n/ a (i) no ne re po rt ed ;( ii) Es se nt ia lly ,t he re w er e no ex am pl es of se rv ic e us er in vo lv em en t in m en ta l he al th re se ar ch in pr is on s, la gg in g be hi nd co m m un ity re se ar ch (i) po ss ib le bi as of st af f se le ct in g pr is on er s; bu re au cr ac y af fe ct s av ai la bi lit y; pa ym en t is co nt en tio us ;p ow er di ffe re nc es ;p ris on & re se ar ch bu re au cr ac y; (ii ) co ns ul tin g fo re ns ic in vo lv em en t pr oj ec ts ,a nd pr is on er co un ci ls & se rv ic e de ve lo pm en t pr oj ec ts fo r gu id an ce ;n ee d tim e & re so ur ce s; st af f bu y- in an d lia is on pe rs on ;n eg ot ia te ar ou nd pr is on er se le ct io n; no t to ra is e ex pe ct at io ns ; su pp or t to be in vo lv ed ;a d- dr es s is su es of co nf id en tia l- ity ;p ro vi de tr ai ni ng – sh ou ld le ad to sk ill s an d qu al ifi ca tio ns ;a gr ee ro le s; ed uc at e pr is on st af f A bb re vi at io ns :P Li P= Pe op le Li vi ng in Pr is on ;P FL iP = Pe op le w ho Fo rm er ly Li ve d in Pr is on ;C BP R = C om m un ity -B as ed Pa rt ic ip at or y Re se ar ch ;P A R = Pa rt ic ip at or y A ct io n Re se ar ch ;T C = Th er ap eu tic C om m un ity Treacy et al. Health and Justice (2021) 9:30 Page 14 of 21 designing or feeding back on research materials (n = 24, papers 1–6,8,11-19,28-30,33,34,36–38), with some stud- ies also reporting involvement in overall research design (n = 16, papers 3–5,7-11,16,18,19,27,28,32,33,35). The majority of papers also involved PLiPs or PFLiP in undertaking research (n = 25) largely in collecting ques- tionnaires (n = 10, papers 1,9-11,13,14,16,17,19,38) or conducting or co-conducting interviews and focus groups (n = 14, papers 1–3,5-7,10,16,19,28-30,36,38); and, in dissemination (n = 27) with PLiPs or PFLiPs authoring or co-authoring papers (n = 22, papers 1– 3,5,9-12,14-17,19,22,24,28,29,31-33,36,38), and present- ing or co-presenting findings (n = 13, papers 3, 5,6,10- 12,15-17,19,27,33,36). A number of studies (n = 22) also involved individuals in feeding back views on prelimin- ary findings, or in the interpretation and analysis of qualitative data, with involvement in quantitative analysis explicitly reported by only two studies, one of which was led by PFLiPs (papers 19,38). This was despite the majority of papers employing a mixed methodology (n = 22; papers 1,3,4,6,9,12-14,16,18-21,23,24,28,31,32,34,36–38), and a further two using a quantitative approach (papers 26,33). The remaining papers used a qualitative methodology or were a review. A large number of studies also involved PLiPs or PFLiPs feeding into, planning or implementing resultant prison programmes or service changes (n = 23). PLiPs and PFLiPs were less involved in funding or commissioning applications (n = 9), with only three papers reporting PLiPs or PFLiPs as co-authoring, or co- applying for funding applications (papers 12,31,36), and two PLiP and PFLiP-led research teams were commis- sioned to undertake research (papers 19,38). In addition, only ten papers described involvement in research ad- ministration or management which mostly included tak- ing responsibility for the functioning of the research team (papers 4,6,12,15,17,36,38), but also in training re- search staff (paper 36), and interviewing prospective aca- demic researchers (paper 28). Lastly, there were only thirteen papers that detailed the involvement of PLiPs or PFLiPs in project evaluations, which is described further in Research Question Three. Research question three: was prisoner involvement evaluated, and how? What were the main findings? The majority of the papers presented no evaluation of PLiP or PFLiP involvement (n = 26), and indeed the included literature review on prison mental health re- search found no studies that evaluated the involve- ment of PLiPs or PFLiPs in the research process (paper 39). Of the twelve papers that did present some evaluative detail, this mostly took the form of PLiP or PFLiP (critical) reflections (papers Fig. 2 Types of involvement of people living in prison Treacy et al. Health and Justice (2021) 9:30 Page 15 of 21 3,5,10,12,16,17,19,22,24,27,28,36); one paper subjected the reflections to a qualitative analysis (paper 12), and another paper involved interviewing PLiPs and analys- ing the data qualitatively (paper 27). The findings of the papers’ ‘evaluations’ were broken down into impact of involvement on (i) the PLiPs and PFLiPs and (ii) the research and researchers. It is of note, that whilst a number of the papers did not present evaluative or reflective detail, some papers did include authors’ observations on impact, which will also be in- cluded here. Regarding (i) impact on PLiPs and PFLiPs, the papers mostly reported positive findings in relation to emotional effects – with increased confidence, opti- mism and empowerment (n = 12, papers 5,12,15- 17,19,22-24,28,33,36), healing, compassion and giving back (n = 9, papers 5,10,11,13,17,19,22,27,36), and un- derstanding and developing a more positive perspective on themselves (n = 7, papers 3,5,9,10,20,27,29). It was also reported that PLiPs and PFLiPs found the work meaningful and purposeful (n = 6, papers 12,16,17,19,20,36), emancipatory (n = 3, papers 3,5,27), that they felt valued and respected (n = 6, papers 3,5,19,27,28,36), and that they appreciated the transfer- able skills and knowledge that they learned (n = 6, papers 12,15-17,33,36), and the opportunity to be involved in service change and future research work (n = 8, papers 3,5,9,10,20,27,29,32). One paper also suggested that in- volvement had also increased desistance (paper 27). There were very few negative findings reported, with one paper each respectively reporting: frustration at not being listened to (paper 19), concerns about personal privacy (paper 22), and – more neutrally – that the in- volvement work had had little impact (paper 27). The impact of PLiP and PFLiP involvement on (ii) the research process and/or the researchers, largely focused on the process. There were reports that involvement in- creased understanding and knowledge with PLiP or PFLiPs offering new or more ‘holistic’ insights (n = 10, papers 5,6,10-12,15,16,19,21,23), and enhancing the val- idity, quality or applicability of the research (n = 12, pa- pers 4,9,16,25,27,28,30,32,33,35,36,38). In addition, seven papers stated that PLiP work contributed to the success of the research (papers 6,10,13,20,22,26,28), co-created service change (n = 8, papers 5,10,13,16,21,23,25,32), and six papers reported that involving PLiP in the research process was feasible (papers 11,13,16,24,33,36). Some of the researchers also reflected on the mutual learning that took place during the process (n = 3, papers 3,10,11), the personal transformative impact on them and their perspectives (n = 4, papers 3,10,11,22), and the impact on them professionally (n = 4, papers 3,5,10,15), including reflecting on their role and purpose, and of the sometimes negative impact of institutions and norms (which they are part of) on the lives of PLiP. There were only four less positive reflections made on the process: that group dynamics were difficult to manage (n = 2, pa- pers 19,28); that conflict arose around using PLiP names and images in project materials – with project staff con- cerned about how being identified as a PLiP or PFLiP could have a negative impact in future (paper 36); that peer researchers’ lack of experience or use of personal experience may ‘lead’ study participants (paper 30); and that involving PLiPs and PFLiPs in a prison context will always involve methodological compromise (paper 20). Research question four: what were the main obstacles and solutions for overcoming them? A number of obstacles to PLiP or PFLiP involvement in research were described. The most frequently reported was that power differences between PLiPs or PFLiPs and academic researchers – amplified when within a hier- archical prison system – meant that the equality inher- ent in participatory approaches was even more difficult to attain (n = 9, papers 1,3-5,15,19,20,23,24). The impact of prison bureaucracy was also described as a barrier in terms of PLiP availability (n = 6, papers: 1,3,5,16,19,20), lack of computer/internet access limiting types of in- volvement and communication (n = 3, papers 3,16,19), room availability and interruptions (n = 3, papers: 3,5,16), and limiting researcher access to PLiPs (n = 2, papers 20,22). There were also reported barriers to in- volvement arising from (ex-)PLiP turnover (n = 3, papers 4,12,33), lack of funding and resources (n = 3, papers: 4,12,22), and a lack of staff belief in the process or re- search (n = 3, papers: 12,16,19). Three papers also specif- ically detailed the impossibility of involving PLiPs in their research, so much so that they only involved PFLiPs (n = 3, papers19,28,35). In addition, researchers described dilemmas in conducting research involving PLiPs around voluntariness (papers 5,22), payment (paper 22) and confidentiality (paper 22), as well as uni- versity bureaucracy negatively impacting recruitment (paper 28). In addition, a number of recommendations for the in- volvement of PLiP and PFLiPs were also made, which included: – Emphasise staff buy-in (especially senior staff and overall prison governor or warden), common values and goals. – Ensure adequate funds for the research and staff time to conduct it. – Designating an administrative worker for the study. – Training PLiPs for the role and responsibilities expected of them (e.g. facilitating focus groups). – Not being overly prescriptive about process where PLiP or PFLiPs lead. – Regularly share feedback of findings and news. Treacy et al. Health and Justice (2021) 9:30 Page 16 of 21 – Paying researchers for their work (e.g. PLiP involvement could become a work placement to enable this. – Building evaluation into the research design from the beginning. Discussion Summary of findings Most of the included papers used ‘participatory’ approaches, which are typically bottom-up, community-generated and sometimes explicitly polit- ical ways of working, alongside the more apolitical, top-down PPI-type approaches. This was broadly consistent with findings in community studies (Hoekstra et al., 2020), although were more defined in the prison literature (Mockford et al., 2012). PLiP involvement was more collaborative than PLiP-led as opposed to PPI in the community studies (Ocloo & Matthews, 2016), with PLiPs and PFLiPs involved in most aspects of the research process, although with less involvement in higher-level operations such as funding applications or commissioned projects, and project administration or management. Very few of the studies included an evaluation. Of those that did, these were largely a presentation of PLiP or PFLiP or researcher reflections not subject to any formal analysis, with mostly positive impacts on PLiPs and PFLiPs, the research process, and the team reported. There were very few negative reports – as with community-based studies (Aubin et al., 2019; Ball et al., 2019; Brett et al., 2012; Cook et al., 2019; Mockford et al., 2012). In terms of the barriers, a number of studies discussed similar issues around involvement activities as those carried out in the community but possibly magnified by the prison set- ting. These included more entrenched power differ- ences, prison bureaucracy, lack of funding and resources, staff attitudes and ethical concerns. It would appear that these issues, which besiege prison research more generally (Charles et al., 2016; James, 2013; Matfin, 2000), present very particular issues for PLiP and PFLiP involvement in the research process that need careful consideration. Addressing research question five: the feasibility of undertaking a systematic review of the involvement of people in prison? With a lack of robust evaluations, there is obviously a high risk of bias in the articles included in this review and, consistent with reviews of public involvement in the community, this makes it difficult to draw any con- clusions from the evidence presented. Given the lack of evidence available or found for this review, this would suggest that conducting a full systematic review of the literature may not be feasible until the evidence base is somewhat stronger than it currently is. Review limitations There were a number of aspects of this review that could limit the extent to which the findings can be applied, which derive from: (i) the papers included, and (ii) the way the review was conducted. (i) The papers included The majority of papers included were from high income countries. Whilst this may reflect the languages spoken by the review team members, it is also reflective of the “northern epistemic hegemony” (Aas, 2012) apparent in much research. Given that at least some par- ticipatory approaches have their roots in the work of Freire (1970) and more emancipatory, anticolonial and political struggles in low and middle-income countries (Glassman & Erdem, 2014; Macauley, 2017), it is likely that at least some prison participatory work is happening that is either unpublished or not captured within the re- view’s search strategy due to language barriers. In addition, a number of the papers were drawn from a research group in Canada, who appeared to run a number of linked research projects funded over a longer period of time which would benefit robust relationship building and involvement activities (Buchanan et al., 2011; Kendall et al., 2020; Martin et al., Martin, Murphy, Chan, et al., 2009, Martin et al., 2013, Martin et al., 2017, Martin et al., 2018; Ramsden et al., 2015). Obvi- ously, this may be different for the more short-term funded studies and timeframes that that many prison projects are conducted within, and therefore not be readily generalisable as they may not be reflective of the type and extent of involvement and relationships pos- sible to develop within that shorter timeframe, which may skew some of the findings of the review. That said, there were some shorter-term studies included, and it is hoped that the findings and recommendations of both the shorter and longer-term projects will be useful. (ii) The review process None of the review team were PLiPs or PFLiPs and, as such, this may limit the analysis. This review was intended as a scoping of the available evidence to assess the feasibility of conducting a full systematic review. Whilst at the present time this would be considered un- feasible, at a later date when the evidence base is more populated, it would be a firm recommendation of this review that the review team would be broadened to in- clude or indeed be led by someone (or team of people) who lives or has lived in prison. Treacy et al. Health and Justice (2021) 9:30 Page 17 of 21 This review also provided no assessment of study qual- ity. Given that there was a lack of evaluations that could be assessed for quality in a more ‘traditional’ sense, this was justified. However, there appears to be a need for some form of specific standard assessment of quality of public involvement, both in the community and in prisons, which does not currently exist (Brett et al., 2010). It may be that using a tool such as GRIPP2 (Sta- niszewska et al., 2017) to record the ways that PLiP or PFLiP involvement is defined and reported, alongside charting the issues raised in the Public Involvement Im- pact Assessment Framework (Popay, Collins et al., 2014) in a well-described, systematic way, may be useful. Recommendations Further recommendations, aside from those arising from the review limitations, also arose from the combination of difficulties in public involvement generally and its ap- plication in a prison setting more specifically. These are: – Whilst prison staff buy-in is very important in a prison context and may indeed need some local, re- gional or national government prison policy support, as no research can successfully occur in prisons without addressing these ‘gate-keepers’ (Matfin, 2000), researcher buy-in is equally important. There is a lack of understanding amongst some researchers of the potentially positive impact of public involve- ment especially for research quality improvement; hence, education and training at all career stages may be useful (Biggane et al., 2019; Johnson et al., 2018). – Research in prisons can take a long time to set-up and conduct (Hayes & Senior, 2007), and involving public in research can take even more time and re- sources, particularly where PLiPs or PFLiPs need additional training (Domecq et al., 2014). Therefore, it is important that this is adequately accounted for in the commissioning and funding of research, and in making funding applications, as it is possible that PLiP involvement could be marginalized. – Whilst the issues of payment of PLiPs for their involvement may be controversial, it has been possible to include it as a work or education placement in one of the included papers (Fields et al., 2008). This could indeed be possible in prisons in England and Wales but it would need more centralized government support to facilitate it and, similarly, local, regional or national government support in other jurisdictions; – Evaluations – some researchers have highlighted the complexity of disentangling the relative contributions of patient and professional researchers (Aubin et al., 2019), whilst others have suggested that this is over-complicating the issue (Boivin et al., 2018). Given the embryonic nature of PLiP involve- ment in the ‘research evidence journey’ (Nutley, Powell & Davies, Nutley et al., 2013), conducting a variety of studies to populate the evidence base ran- ging from more quantitative and qualitative explora- tory studies to more robust evaluations would help to gain a greater understanding of impact, ‘what works’ and ‘what does not work’ in this specific con- text, and develop solutions to barriers regarding power differences, bureaucracy, cultural issues and ethical concerns. Conclusions A number of the findings of this review are consistent with those of reviews undertaken of patient and public involvement in health and social care research in the community – particularly the lack of evaluations, and therefore lack of evidence of effectiveness. There were also similar barriers to implementation, although some- what amplified by the hierarchical structure of the prison setting. Importantly, this review highlights that there are a number of studies of PLiP or PFLiP involve- ment across most aspects of the research cycle. How- ever, there is a lack of involvement in higher-level research operations, and indeed PLiP or PFLiP-led re- search. It is important that this work is more robustly evaluated in order to not only provide evidence of effect- iveness, but to more meaningfully explore challenges to PLiP or PFLiP prisoner involvement and to develop practice in the field. The health and social care needs of PLiPs are manifold, and governments are reluctant to grant early release, even to those in very ill health. It is therefore imperative that this particularly vulnerable and disempowered group of people are given voice in health and social care research in order to potentially improve their situation. Supplementary information The online version contains supplementary material available at https://doi. org/10.1186/s40352-021-00154-6. Additional file 1: Appendix 1. PRISMA-ScR-Fillable-Checklist_09.08.21. Additional file 2: Appendix 2. Example Search Strategy (initial search). Acknowledgements We would like to especially thank Barney Eden, Anna Haggith, Nuwan Wickramasinghe and Veronica Phillips for their very valuable contributions to this review. Authors’ contributions ST was the lead researcher and conceptualised, designed, searched, analysed and interpreted data, and led on writing the manuscript. SM and NS were involved in screening and extracting data as well as reviewing and editing various versions of the manuscript. TVB was the Principle Investigator/Study Lead, contributed towards conceptualisation, design, data quality control, manuscript reviewing and editing, and supervising all aspects of the study. Treacy et al. Health and Justice (2021) 9:30 Page 18 of 21 ST and TVB carried out the manuscript revisions. All authors read and approved the final manuscript. Funding This is a summary of research funded by the National Institute for Health Research (NIHR) Applied Research Collaboration East of England. Additional sponsorship, as part of the wider prison care programme, was also received from the Cambridgeshire and Peterborough NHS Foundation Trust (CPFT). The views expressed are those of the author(s) and not necessarily those of the NHS, the NIHR or the Department of Health and Social Care. Availability of data and materials All data and materials used in this review are included in this article and its appendices. Declarations Ethics approval and consent to participate Not applicable. Consent for publication Not applicable. Competing interests The authors declare that they have no competing interests. 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