Table 1: Sociodemographic and risky sexual characteristics of MSM by HIV infection status.

VariablesCategoryTotal sample (%)HIV positive (%)HIV negative (%) value value

Present age2.1410.143
<2593 (17.4)28 (30.1)65 (69.9)
≥25440 (82.6)101 (23.0)339 (77.0)
Ethnicity0.5370.464
Han499 (93.6)119 (23.8)380 (76.2)
Minority34 (6.4)10 (29.4)24 (70.6)
Marital status2.1580.142
Married129 (24.2)25 (19.4)104 (80.6)
Never married/divorced/widowed404 (75.8)104 (25.7)300 (74.3)
Educational level2.5770.108
≤junior middle school160 (30.0)46 (28.8)114 (71.2)
>junior middle school373 (70.0)83 (22.3)290 (77.7)
Socioeconomic disconnection0.2320.630
Yes52 (9.8)14 (26.9)38 (73.1)
No481 (90.2)115 (23.9)366 (76.1)
Monthly income (RMB)2.4600.117
<250073 (13.7)23 (31.5)50 (68.5)
≥2500460 (86.3)106 (23.0)354 (77.0)
Length of stay in Shenzhen0.1000.752
<1 month38 (7.1)10 (26.3)28 (73.7)
≥1 month495 (92.9)119 (24.0)376 (76.0)
Syphilis infection48.539<0.001
Yes159 (29.8)70 (44.0)89 (56.0)
No374 (70.2)59 (15.8)315 (84.2)
Ever had vaginal sexual intercourse0.6200.431
Yes354 (66.4)82 (23.2)272 (76.8)
No179 (33.6)47 (26.3)132 (73.7)
Fixed homosexual partner0.0540.816
Yes368 (69.0)88 (23.9)280 (76.1)
No165 (31.0)41 (24.8)124 (75.2)
Number of anal sexual partners in the past 6 months5.2850.071
≤2217 (40.7)44 (20.3)173 (79.7)
3–5150 (28.1)46 (30.7)104 (69.3)
>5166 (31.2)39 (23.5)127 (76.5)
Role in anal sexual intercourse44.861<0.001
Insertive212 (41.1)21 (9.9)191 (90.1)
Receptive123 (23.8)50 (40.7)73 (59.3)
Both181 (35.1)54 (29.8)127 (70.2)
Always use condom in anal sexual intercourse in the past 6 months6.0890.014
Yes214 (42.5)39 (18.2)175 (81.8)
No289 (57.5)80 (27.7)209 (72.3)
With a comprehensive knowledge of HIV0.1140.736
Yes378 (70.9)93 (24.6)285 (75.4)
No155 (29.1)36 (23.2)119 (76.8)

Data may not add up to 533 because of missing value.