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Table 1 Demographics and HIV, syphilis and HSV-2 prevalence by commercial sex engagement among 3717 MSM in six Chinese cities

From: Commercial sex and risk of HIV, syphilis, and herpes simplex virus-2 among men who have sex with men in six Chinese cities

Characteristic Total NC-MSM MSM-buying MSM-selling P-value*
N (%) N (%) N (%) N (%)
Overall 3717 (100.0) 3465 (93.2) 103 (2.8) 149 (4.0) _
HIV positive 411 (11.1) 378 (10.9) 13 (12.6) 20 (13.4) 0.554
Syphilis positive 327 (8.8) 302 (8.7) 7 (6.8) 18 (12.1) 0.285
HSV-2 positive 409 (12.1) 380 (11.9) 12 (14.1) 17 (17.5) 0.202
Age (median, IQR, in years) 26 (23–33) 26 (23–33) 28 (24–34) 23 (21–28) <0.001
Han majority 3447 (92.7) 3237 (93.4) 87 (84.5) 123 (82.6) <0.001
Married with females 893 (24.0) 846 (24.4) 33 (32.0) 14(9.4) <0.001
Living in the study city ≤6 mo. 261 (8.6) 239 (8.2) 5 (7.6) 17 (29.3) <0.001
Student, in school 548 (14.8) 530 (15.3) 8 (7.8) 10 (6.8) <0.001
Education: College or above 2128 (57.3) 2048 (59.1) 52 (50.5) 28 (18.8) <0.001
Seeking male sexual partners via internet 2560 (69.0) 2439 (70.5) 59 (57.3) 62 (41.9) <0.001
Seeking male partners locally or in other cities
 Locally 2461 (72.3) 2377 (73.8) 43 (52.4) 41 (41.0) <0.001
 In other cities 516 (15.2) 452 (14.0) 25 (30.5) 39 (39.0)  
 Neither 427 (12.5) 393 (12.2) 14 (17.1) 20 (20.0)  
Number of MSM partners in past 6 months
 0–2 2315 (63.2) 2250 (65.5) 37 (39.0) 28 (21.5) <0.001
 3–9 1052 (28.7) 973 (28.3) 37 (39.0) 42 (32.3)  
 ≥10 294 (8.0) 213 (6.2) 21 (22.1) 60 (46.2)  
Use of any recreational drugs in past 6 months 886 (27.5) 804 (26.3) 31 (40.3) 51 (59.3) <0.001
UAI in past 6 months 2320 (62.4) 2136 (61.7) 68 (66.0) 116 (77.9) <0.001
Predominant role in anal sex
 Equal 1228 (33.9) 1136 (33.4) 31 (31.6) 61 (49.2) 0.001
 Insertive 1180 (32.5) 1122 (33.0) 36 (36.7) 22 (17.4)  
 Receptive 1219 (33.6) 1147 (33.7) 31 (31.6) 41 (33.1)  
Having sex with female, in past 6 months 675 (18.2) 613 (17.7) 34 (22.8) 28 (27.2) 0.016
  1. HSV-2 human herpes virus type 2, UAI Unprotected anal intercourse, IQR interquartile range
  2. *Chi-square test