“…Peer training content varied across the 18 studies and is referenced in Table 2. More than half of the studies (Addison et al, 2019;Cabral et al, 2018;DeMarco & Chan, 2013;Dunn Navarra et al, 2019;Guy et al, 2020;Gwadz et al, 2017;Johnson et al, 2021;Koester et al, 2014;Reback et al, 2021;Senn et al, 2017;Tobias et al, 2012) included training directed to ethics (e.g., Health Insurance Portability and Accountability Act [HIPAA], confidentiality) and/or communication skills (i.e., cultural competency, motivational interviewing; Addison et al, 2019;Dunn Navarra et al, 2019;Gwadz et al, 2017;Hirshfield et al, 2021;Koester et al, 2014;Messeri et al, 2020;Reback et al, 2021;Senn et al, 2017;Tobias et al, 2012;Wolfe et al, 2013). Nearly all studies included training on HIV knowledge (n 5 15) and/or medication adherence (n 5 14); however, self-efficacy, harm reduction, stigma and disclosure, mental health, gender and sexual health, health care system engagement, and general health/wellness were inconsistent across studies (Table 2).…”