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

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

 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)

 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

 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