Table 1.
Demographics and HIV, syphilis and HSV-2 prevalence by commercial sex engagement among 3717 MSM 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 |
HSV-2 human herpes virus type 2, UAI Unprotected anal intercourse, IQR interquartile range
*Chi-square test