Efficacy of Peer Interventions for HIV

Electronic Supplemental Material. Studies of Peer-Based HIV Interventions by Study Design (N = 117)
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
RANDOMIZED CONTROLLED TRIALS
Cottler, et al., 1998,
USA(1) / 725 Cocaine/Crack Users / Formal Meetings/Structured Groups / 3 month / Rsexb: 0/1
AODc: 1/1
DiClemente, et al., 1995, USA(2) / 128 African-American Females / Formal Meetings/Structured Groups / 3 month / HIVKnowd: 0/1
Att/Coge: 5/8
Ergene, et al., 2005, Turkey(3) / 387 University Students / Formal Meetings/Structured Groups / Posttest / HIVKnowd: 1/1
Att/Coge: 1/1
Gifford, et al., 1998,
USA(4) / 71 Male PLWHAf / Formal Meetings/Structured Groups / 3 month / Biog: 0/1
HIVKnowd: 0/1
Att/Coge: 2/10
Gollub et al., 2010, USA(5) / 189 Female Drug Users / Formal Meetings/Structured Group / 3 months / Rsexb: 6/8
HIVKnowd: 1/1
Grinstead, et al., 1999, USA(6) / 414 Inmates / Formal One-on-One / 2 weeks / Rsexb: 1/1
AODc: 0/1
Electronic Supplemental Material. Studies of Peer-Based HIV Interventions by Study Design (N = 117)
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
RANDOMIZED CONTROLLED TRIALS CONT.
Hong et al., 2009 , China(7) / 737 Married Women / Formal One-on-One / 13 months / Rsexb: 1/1
HIVKnowd: 1/1
Jahanfar et al., 2009, Malaysia(8) / 530 School Based Youths / Formal Meetings/Structured Group / Posttest / Rsexb: 0/1
HIVKnowd: 1/1
Att/Coge: 1/1
Kelly, et al., 1994,
USA(9) / 187 Women / Formal Meetings/Structured Groups / 3 month / Rsexb: 2/3
HIVKnowd: 0/1
Att/Coge: 2/5
Latkin et al., 2009, USA and Thailand(10) / 1123 IDUh / PoLi / Every 6 months for 30 months / Biog: 0/1
Rsexb: 0/5
AODc: 0/7
Latkin, et al., 2003,
USA(11) / 252 Substance Users / Formal Meetings/Structured Groups / 6 month / Rsexb: 1/1
AODc: 3/3
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Intervention
RANDOMIZED CONTROLLED TRIALS CONT.
Li et al., 2010, China(12) / 2237 School Based Youth / Formal meetings/Structured Group / 3 months / Rsexb: 1/1
HIVKnowd: 1/1
Att/Coge: 1/1
McKirnan et al., 2010, USA(13) / 313 MSMj PLWHAf / Formal One-on-One / 6 & 12 months / Rsexb: 4/7
AODc: 1/1
Morisky, et al., 2005, Phillipines(14) / 700 Male Taxi and Tricycle Drivers / Outreach / Posttest, 16-18 months, 31-33 months / Rsexb: 1/1
HIVKnowd: 1/1
Att/Coge: 1/1
Naar-King et al., 2010, USA(15) / 87 PLWHAf / Formal One-on-One / 12 months / Oth Non-selfk: 2/2
Outlaw et al., 2010 USA(16) / 188 MSMj / Formal One-on-One / Posttest / Oth Non-selfk: 2/2
Pearson, et al., 2007, Mozambique(17) / 350 PLWHAf / Formal One-on-One / 1.5, 6 & 12 months / Biog: 0/2
Att/Coge: 1/1
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
RANDOMIZED CONTROLLED TRIALS CONT.
Quirk, et al., 1993,
USA(18) / 214 Female Non- School Based Youth / Outreach / Posttest, 1 month / Att/Coge: 1/2
Rosenblum, et al., 2005, USA(19) / 157 Male Non-School Based Youth / Formal Meetings/Structured Groups, Formal One-on-One, Other / 12 months / AODc: 2/4
Sherman et al., 2008, Thailand(20) / 983 Adolescent Methamphetamine Users / Formal Meetings/Structured Groups / 3, 6, 9 & 12 months / Biog: 0/1
Rsexb: 1/1
AODc: 1/1
Sherman et al., 2009 Thailand(21) / 983 Methamphetamine Users / Formal Meetings/Structured Group / 12 months / Biog: 0/1
Rsexb: 0/1
AODc: 0/1
Sikkema et al., 2000, USA(22) / 690 Women / PoLi / 12 months / Rsexb: 2/2
HIVKnowd: 1/1
Att/Coge: 3/4
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
RANDOMIZED CONTROLLED TRIALS CONT.
Simoni et al., 2007, USA(23) / 136 PLWHAf / Formal Meetings/Structured Groups, Formal One on One / 3 & 6 months / Biog: 0/1
Att/Coge: 2/5
Oth Non-Selfk: 0/1
Simoni et al., 2009, USA(24) / 224 PLWHAf / Formal Meetings/Structured Group, Formal One-on-One / 3, 6, & 9 months / Biog: 1/4
Oth Non-Selfk: 0/2
Att/Coge: 1/2
Surrat et al., 2010 USA(25) / 806 Drug Using Female Sex-Workers / Formal Meetings/Structured Group / 3 & 6 months / Rsexb: 1/2
AODc: 0/2
Att/Coge: 1/1
Teti et al., 2010, USA(26) / 184 Female PLWHAf / Formal Meetings/Structured Group / 6, 12, & 18 months / Rsexb: 0/1
Att/Coge: 0/1
Velasquez et al, 2009, USA(27) / 253 MSMj PLWHAf / Formal Meetings/Structured Group, Formal One-on-One / 3 month / Rsexb: 0/1
AODc: 2/3
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
RANDOMIZED CONTROLLED TRIALS CONT.
Webel, 2010, USA(28) / 89 Women / Formal Meetings/Structured Group / 3 & 7 weeks / Biob: 0/2
Att/Coge: 2/9
quasi-experimental designs (non-randomized comparison)
Agha, et al., 2002, Zambia(29) / 913 School Based Youth / Formal Meetings/Structured Groups / 2 month / Att/Coge: 5/5
Agha, et al., 2004, Zambia(30) / 416 School Based Youth / Formal Meetings/Structured Groups / 2 weeks, 6 months / Rsexb: 1/3
Att/Coge: 4/5
Asamoah, 1994, Ghana(31) / 180 School Based Youth / Formal Meetings/Structured Groups / Posttest / Att/Coge: 1/2
Basu, et al., 2004, India(32) / 200 Sex workers / Formal Meetings/Structured Groups / 5, 10, & 15 months / Rsexb: 2/2
Borgia, et al., 2005, Italy(33) / 1295 School Based Youth / Formal Meetings/Structured Groups / Posttest / HIVKnowd: 1/1
Att/Coge: 3/3
Brieger, et al., 2001, Nigeria and Ghana(34) / 1784 School and Non-School Based Youths / Formal Meetings/Structured Groups, Formal One on One, Outreach / 18 months / Att/Coge: 5/12
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison) CONT.
Broadhead, et al., 1998, USA(35) / 550 IDUh / Outreach / 6 months / Rsexb: 2/2
AODc: 4/8
Broadhead, et al. 2006, Russia(36) / 758 IDUh / Outreach / 6 months / Rsexb: 1/2
AODc: 7/8
Caron, et al., 2004, Canada(37) / 1004 School Based Youth / Formal Meetings/Structured Groups / 2 weeks & 9 months / Rsexb: 1/2
Att/Coge: 15/17
Chang et al., 2010, Uganda(38) / 1336 PLWHAf on ARTl / Formal Meetings/Structured Group, Formal One-on-One, PoL / Every 24 months up to two years / Biog: 4/11
Chiao, et al., 2008, The Philippines(39) / 907 Sex Workers / Outreach / Posttest / Oth Non-Selfk: 1/1
Rsexb: 0/1
Doyle et al., 2010, Tanzania(40) / 13814 Non-School Based Youth / Outreach, Other / 36 months / Biog: 0/2
Rsexb: 1/9
HIVKnowd: 2/3
Att/Coge: 0/1
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison) CONT.
Dunn, et al., 1998, Canada(41) / 160 School Based Youth / Formal Meetings/Structured Groups / Posttest / HIVKnowd: 2/2
Att/Coge: 6/6
Fisher, et al., 2002, USA(42) / 1576 School Based Youth / PoLi / 1, 3, & 12 months / Rsexb: 1/3
HIVKnowd: 5/6
Att/Coge: 5/12
Flowers, et al., 2002, Scotland(43) / 2276 MSMj / Outreach / 3 years / Rsexb: 0/1
Att/Coge: 0/5
Fogarty, et al., 2001, USA(44) / 164 Female PLWHAf,
723 Women / Formal Meetings/Structured Groups, Formal One on One / 6, 12, & 18 months / Rsexb: 0/4
Att/Coge: 3/3
Ford, et al., 2000, Indonesia(45) / 187 Female Sex Workers / Other / 5-6 months / Biog: 1/1
Rsexb: 0/1
HIVKnowd: 1/1
Att/Coge: 1/1
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison)CONT.
Futterman et al., 2010, South Africa(46) / 160 Pregnant PLWHAf / Formal Meetings/Structured Group / 6 months / Rsexb: 0/9
HIVKnowd: 1/1
Att/Coge: 0/2
Grossberg, et al., 1993, USA(47) / 565 School Based Youth / PoLi / Posttest / Att/Coge: 4/4
Harper et al., 2009, USA(48) / 378 Mexican American Adolescent Females / Formal Meetings/Structured Groups / 2 months / Rsexb: 4/8
HIVKnowd: 2/1
Att/Coge: 5/5
Hayashi et al., 2010, Canada(49) / 854 IDUh / Outreach / 6 months / Rsexb: 0/1
AODc: 1/10
Huang, et al., 2008, China(50) / 3068 School Based Youth / Formal Meetings/Structured Groups / Posttest / AODc: 0/1
HIVKnowd: 1/1
Att/Coge: 3/4
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison)CONT.
Kegeles, et al., 1996, USA(51) / 247 MSMj / Formal Meetings/Structured Groups, Outreach / Posttest / Rsexa: 1/1
Att/Coge: 3/3
Kegeles, et al., 1999, USA(52) / 247 MSMj / Formal Meetings/Structured Groups, Outreach / Posttest and
12 months / Rsexb: 1/2
Att/Coge: 3/3
Kelly, et al., 1991, USA(53) / 659 MSMj / PoLi / 3 & 6 months / Rsexb: 3/3
Kelly, et al., 1992, USA(54) / 924 MSMj / PoLi / Posttest / Rsexb: 3/3
Kelly, et al., 1997, USA(55) / 442 MSMj / PoLi / 12 months / Rsexb: 5/8
Kirby, et al., 1997, USA(56) / 1,657 School Based Youth / Formal Meetings/Structured Groups / 5 & 17 months / Rsexb: 1/8
AODc: 0/1
HIVKnowd: 1/1
Att/Coge: 2/22
Latkin, 1998, USA(57) / 279 IDUh / PoLi / 3 months / Rsexb: 1/1
AODc: 1/2
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison)CONT.
Lemieux, et al., 2008, USA(58) / 306 School Based Youth / PoLi, Outreach, Other / 3 months / Rsexb: 1/1
Att/Coge: 7/7
Luchters et al., 2008, Kenya(59) / 503 Female Sex Workers / Formal Meetings/Structured Groups, Formal One on One, Outreach / Posttest / Biog: 0/8
Rsexb: 8/10
HIVKnowd: 1/1
Att/Coge: 3/3
Mahat et al., 2008, USA(60) / 97 School Based Youth / Formal Meetings/Structured Groups / 5 months / Rsexb: 0/1
HIVKnowd: 1/1
Maro et al., 2007, Tanzania(61) / 1128 School and Non-School Based Youth / Formal Meetings/Structured Groups / Posttest / Att/Coge: 8/8
Maro et al., 2009, Tanzania(62) / 764 School and Non-School Based Youth / Formal Meetings/Structured Group / Posttest / Rsexb: 1/1
HIVKnowd: 1/1
Att/Coge: 7/7
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison)CONT.
Morisky et al., 2004, Philippines(63) / 3389 High-Risk Men / Outreach / 12 months / Rsexb: 1/1
Att/Coge: 3/3
Morisky, et al., 2006, Phillipines(64) / 897 Female Sex Workers / Outreach / 6 months / Biog: 0/1
Rsexb: 1/1
HIVKnowd: 0/1
Att/Coge: 3/4
Morisky et al., 2010, Philipines(65) / 911 Female Sex Workers / Formal Meetings/Structured Group, Formal One-on-One, Outreach, other / 24 months / Rsexb: 1/1
HIVKnowd: 2/2
Att/Coge: 1/1
Morisky et al., 2010, Philipines(66) / 911 Female Sex Workers / Formal Meetings/Structured Group, Formal One-on-One, Outreach, other / Posttest / Oth Non-selfk: 1/1
Rsexb: 1/1
AODc: 1/1
HIVKnowd: 1/1
Att/Coge: 1/1
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison)CONT.
Morisky, et al., 2005, Philippines(67) / 369 Female Bar Workers / Outreach / Posttest / Oth Non-Selfk: 0/1
Rsexb: 1/1
Norr, et al., 2004, Botswana(68) / 403 Women / Formal Meetings/Structured Groups / Posttest / Rsexb: 1/1
HIVKnowd: 1/1
Att/Coge: 2/2
Ramesh et al., 2009, India(69) / 2312 Female Sex Workers / Outreach, Other / 28-37 months / Rsexb: 6/10
Safren et al., 2010, USA(70) / 195 MSMj / Formal Meetings/Structured Group, Formal One-on-One / 3, 6, 9, & 12 months / Biog: 2/0
Oth Non-Selfk: 2/2
Rsexb: 2/2
AODc: 1/1
Sloan, et al., 2005, South Africa(71) / 900 Retail Employees / Formal Meetings/Structured Groups / 4 years / Rsexb: 0/1
HIVKnowd: 0/1
Att/Coge: 0/2
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison)CONT.
Shulkin et al., 1991, USA(72) / 142 School Based Youth / Formal Meetings/Structured Groups / Posttest / HIVKnowd: 1/1
Att/Coge: 2/2
Siegel et al., 1998, USA(73) / 3635 School Based Youth / Formal Meetings/Structured Groups / Posttest, 6 & 12 months / HIVKnowd: 1/1
Att/Coge: 1/2
Sifunda et al., 2008, South Africa(74) / 263 Inmates / Formal Meetings/Structured Groups / Posttest, 3-6 months / HIVKnowd: 0/1
Att/Coge: 1/2
Speizer et al., 2001, Cameroon(75) / 802 Non-School Based Youth / Formal Meetings/Structured Groups, Formal One on One, Outreach / 17 months / Rsexb: 2/2
Att/Coge: 5/5
Ssewamala, et al., 2010(76) / 260 AIDS-Orphaned Adolescents / Formal Meetings/Structured Group, Formal One-on-One / 10 Months / Rsexb: 3/5
Stephenson et al., 2008, England(77) / 27 Schools with over 9000 School Based Youth / Formal Meeting/Structured Groups / 7 year follow-up / Att/Coge: 1/8
Swendeman et al., 2009, India(78) / 220 Female Sex Workers / Formal Meetings/Structured Group, PoLi, Outreach, Other / 16 months / HIVKnowd: 4/4
Att/Coge: 5/5
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
quasi-experimental designs (non-randomized comparison)CONT.
Van der Maas & Otte, 2009, Nigeria(79) / 385 School Based Youths / Outreach, Other / 2 years / Rsexb: 3/4
HIVKnowd:17/20
Att/Coge: 4/4
Wang, et al., 2005, China(80) / 450 Men / PoLi / 5 months / Rsexb: 3/3
Att/Coge: 2/2
Wolitski et al., 2005, US(81) / 811 MSMj PLWHAf / Formal Meetings/Structured Groups / 3 & 6 months / Rsexb: 3/5
Att/Coge: 0/1
Ye et al., 2009, China(82) / 893 School Based Youth / Formal Meetings/Structured Groups / 2 years / Rsexb: 3/4
HIVKnowd: 2/2
Att/Coge: 2/2
cross-sectional or other less rigorous designs (no comparison group)
Barss et al., 2009, United Arab Emirates(83) / 1903 School Based Youths / Formal Meetings/Structured Group / Posttest / HIVKnowd: 13/17
Att/Coge: 9/10
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
cross-sectional or other less rigorous designs (no comparison group) CONT.
Bassett, 1998, Zimbabwe(84) / 40 Factories / Other / Every six months for multiple years / Biog: 1/1
Benzaken, et al., 2007, Brazil(85) / 287 Sex Workers / Outreach / Monthly / Rsexb: 4/4
HIVKnowd: 1/1
Booth, et al., 2010, Ukraine(86) / 722 IDUh / Formal One-on-One
Formal Meeting/Structured Group, Outreach / 6 months / Rsexb: 1/5
AODc: 5/6
Broadhead, et al., 2002, USA(87) / 14 IDUh PLWHAf / Formal One on One / Weekly / AODc: 2/2
Att/Coge: 2/2
Brown, et al., 2005, USA(88) / 168 Community Members / Formal Meetings/Structured Groups / 2 months / HIVKnowd: 1/1
Dolan, et al., 2004, Russia(89) / 277 Substance Using Inmates / Formal Meetings/Structured Groups / Posttest / Rsexb: 0/2
AODc: 0/1
HIVKnowd: 1/1
Att/Coge: 2/2
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Intervention
cross-sectional or other less rigorous designs (no comparison group) CONT.
Elford, et al., 2001, UK(90) / 1,000 MSMj / PoLi / 6, 12, & 18 months / Rsexb: 0/1
AODc: 0/1
Att/Coge: 0/1
Golden et al., 2006, USA(91) / 498 MSMj / Outreach / Posttest / Biog: 2/5
Hammett, et al, 2007, Vietnam and China(92) / IDUh / Outreach / 6, 12, 18, & 24 months / Biog: 1/2
Rsexb: 1/1
AODc: 1/1
Hillman, et al., 1991, USA(93) / 143 Non-School Based Youth / Other / Posttest / Att/Coge: 3/6
Laukamm-Josten, et al., 2000, Tanzania(94) / 928 Male Truck Drivers and 743 Female Sex Workers / Outreach / 18 & 24 months / Rsexb: 14/14
Att/Coge: 12/34
Leonard et al., 2000, Senegal(95) / 45 Female Sex Workers and 260 Male Truck Drivers / Outreach / 3 months / Rsexb: 4/4
HIVKnowd: 1/1
Att/Coge: 2/3
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
cross-sectional or other less rigorous designs (no comparison group) CONT.
Lyons, et al., 2006, USA(96) / 62 MSMj Methamphetamine Users / Formal Meetings/Structured Groups / Posttest / Rsexb: 2/2
AODc: 1/1
Merakou et al., 2006, Greece(97) / 702 School Based Youth / Outreach / Posttest / HIVKnowb: 0/1
Att/Coge: 0/3
Merati et al., 1997, Indonesia(98) / 375 Non-School Based Youth / Formal Meetings/Structured Groups / 6 months / HIVKnowd: 1/1
Att/Coge: 3/3
Miller et al., 1990, USA(99) / 148 MSMj / Formal Meetings/Structured Groups / Posttest / HIVKnowd: 1/1
Att/Coge: 2/2
Miller et al., 2008, Kenya(100) / 1378 School Based Youth / Outreach / 2 years / Rsexb: 1/3
Att/Coge: 2/4
Moongtui et al, 2000, Thailand(101) / 91 Healthcare Workers / Other / 1 month / Oth Non-Selfk: 0/1
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
cross-sectional or other less rigorous designs (no comparison group) CONT.
O'Hara, et al., 1996, USA(102) / 31 School Based Youth / Formal Meetings/Structured Groups, Outreach / 3 months / Rsexb: 1/1
Att/Coge: 1/1
Özcebe, et al., 2004, Turkey(103) / 369 Non-School Based Youth / Outreach / 6 months / HIVKnowd: 1/1
Reznick et al., 2010, USA(104) / 202 Women Visiting Incarcerated Partners / Formal Meetings/Structured Group, Formal One-on-One, Outreach / 30 days / Rsexb: 1/3
HIVKnowd: 1/2
Att/Coge: 2/4
Ross et al., 2006, USA(105) / 2,506 Inmates / Formal Meetings/Structured Groups / Posttest, 12 & 18 months / HIVKnowd: 1/1
Att/Coge: 2/2
Sergeyev, et al., 1999, Russia(106) / 484 IDUh / Outreach / 3, 6, & 9 months / Rsexb: 0/1
AODc: 4/4
Singh et al., 1994, India(107) / 1301 Female Sex Workers / Formal Meetings/Structured Groups / 2 years / Rsexb: 1/1
Att/Coge: 1/1
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
cross-sectional or other less rigorous designs (no comparison group) CONT.
Singh, 1998, India(108) / 1084 Female Sex Workers / Outreach / 1 & 2 years / Rsexb: 1/1
HIVKnowd: 2/2
Slap et al., 1991, USA(109) / 241 Non-School Based Youth / Formal One-on-One / 2-6 weeks / Rsexb: 2/2
HIVKnowd: 1/1
Somerville et al., 2006,
USA (US-Mexico border)(110) / 766 Latino MSMj / PoLi / Posttest / Rsexb: 2/3
HIVKnowd: 0/1
Att/Coge: 3/3
Thompson & Harutyunyan, 2009, Armenia(111) / 300 Mothers / Formal One-on-One
Formal Meetings/Structured Group, Outreach / 7 months / HIVKnowd: 1/1
Vaz, et al., 1996, Mozambique(112) / 300 Male Inmates / Formal Meetings/Structured Groups / 6 months / HIVKnowd: 1/1
Walden, et al., 1999, Malawi(113) / 424 Female Sex Workers and 347 Male Truck Drivers / Outreach / 5 years / Rsexb: 3/10
Att/Coge: 2/7
Electronic Supplemental Material Cont.Studies of Peer-Based HIV Interventions by Study Design (N = 117).
Author, Year,
Study Location / Target Population / Intervention Modality / Follow-up Duration / Results Supportive of Interventiona
cross-sectional or other less rigorous designs (no comparison group) CONT.
Weeks, et al., 2009, USA(114) / 523 IDUh and Crack Users / Outreach / Posttest / Rsexb: 9/14
AODc: 8/14
Williams, et al., 2003, South Africa(115) / 899 Miners, 121 Female Sex Workers, and 400 Non-School Based Youths / Outreach / 2 year / Biog: 2/8
Rsexb: 3/24
AODc: 1/4
HIVKnowd: 4/4
Zhang, et al., 2010, China(116) / 218 MSMj / Formal Meetings/Structured Group, PoLi / 3 months / Rsexb: 8/10
Att/Coge: 1/1
Zuniga et al., 2009 USA(117) / 286 Non-School Based Youth / Formal Meetings/Structured Group / Posttest / HIVKnowd: 1/1
Att/Coge: 3/4

a Results supportive of intervention are reported as the number of results in a given domain supportive of the peer intervention / total number of results analyzed for that outcome; b Rsex = sexual risk behavior; c AOD= substance use; d HIVKnow= HIV knowledge; eAtt/Cog= attitudes and cognitions; fPLWHA = people living with HIV/AIDS; g Bio= biomarkers; hIDU = injection drug users; i PoL = popular opinion leader; j MSM = men who have sex with men; k Oth Non-self=other non-self-reported outcomes; l ART = antiretroviral treatment.