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. Author manuscript; available in PMC: 2022 Oct 11.
Published in final edited form as: Ann Epidemiol. 2022 Apr 8;72:1–8. doi: 10.1016/j.annepidem.2022.03.012

Table 2.

Recent sex work, sexual behavior, and sexually transmitted infections at the COPE study baseline (October 2017 – August 2019) among Thai MSM and TGW who exchanged sex in the prior 12 months (n=890).

Total Indication of sex work in last 30 days from any question Indication of sex work from primary or secondary questions
No (n=460) Yes (n=430) Primary (n=270) Secondary only (n=160)
n (%) n (%) n (%) p n (%) n (%) p
Tested for HIV in last 6 months 581 (65) 295 (64) 286 (67) 0.32 174 (64) 112 (70) 0.28
HIV infection 44 (5) 24 (5) 20 (5) 0.90 14 (5) 6 (4) 0.54
Current chlamydia infection 143 (16) 67 (15) 76 (18) 0.069 42 (16) 34 (21) 0.16
Current gonorrhea infection 48 (5) 18 (4) 30 (7) 0.021 19 (7) 11 (7) 0.85
Current syphilis infection 92 (11) 34 (8) 58 (14) 0.008 36 (14) 22 (15) 0.90
Prior diagnosis of chlamydia, gonorrhea, or syphilis 195 (22) 88 (19) 107 (25) 0.25 66 (24) 41 (26) 0.92
Anal sex in the last 7 days <0.001 0.004
 No 267 (30) 178 (39) 89 (21) 52 (19) 37 (23)
 Yes 440 (49) 191 (42) 249 (58) 171 (63) 78 (49)
 Don’t know or refused to answer 183 (21) 91 (20) 92 (21) 47 (17) 45 (28)
Last time had anal sex with man <0.001 0.004
 Within 30 days 545 (61) 253 (55) 292 (68) 198 (73) 94 (59)
 More than 30 days 152 (17) 106 (23) 46 (11) 25 (9) 21 (13)
 Don’t know or refused to answer 193 (22) 101 (22) 92 (21) 47 (17) 45 (28)
Used condom during last anal sex 0.009 0.52
 No 230 (26) 121 (26) 109 (25) 63 (23) 46 (29)
 Yes 643 (72) 325 (71) 318 (74) 205 (76) 113 (71)
 Don’t know or refused to answer 17 (2) 14 (3) 3 (1) 2 (1) 1 (1)
Used alcohol or drugs during anal sex in last 7 days <0.001 0.13
 No 530 (60) 310 (67) 220 (51) 139 (51) 81 (51)
 Yes 99 (11) 27 (6) 72 (17) 51 (19) 21 (13)
 Don’t know or refused to answer 261 (29) 123 (27) 138 (32) 80 (30) 58 (36)

Note: MSM = men who have sex with men; TGW = transgender women. Primary question for sex work: “In the last 30 days, have you sold or traded sex?” Secondary questions for sex work: “In the last 30 days, what were your sources of income?”; “Is transactional sex your primary source of income?”; “In the last 30 days, if you have sold or exchanged sex, where did you meet your partner(s)?”; “In the last 7 days, with how many partners did you have anal sex in exchange for money, drugs or anything else of value?”