| | Factorsa | Self-perceived HIV risk % () | Crude odds ratio (95% confidence interval) | High risk
() | Medium risk
() | Low risk
() | No risk
() | High versus medium | Low versus medium | No versus medium |
| | Age at interview (year): | | | | | | | | | Mean ± standard deviation | 28.1 ± 5.6 | 29.9 ± 7.2 | 30.6 ± 8.1 | 30.7 ± 9.2 | 0.96 (0.92, 1.00) | 1.01 (0.99, 1.03) | 1.01 (0.99, 1.04) | | Ethnicity | | | | | | | | | Han | 89.2 (58) | 96.0 (238) | 93.1 (431) | 96.4 (107) | 1.00 | 1.00 | 1.00 | | Others | 10.8 (7) | 4.0 (10) | 6.9 (32) | 3.6 (4) | 2.87 (1.05, 7.87) | 1.77 (0.85, 3.66) | 0.89 (0.27, 2.90) | | Ever married | | | | | | | | | Never | 76.9 (50) | 73.8 (183) | 73.9 (342) | 64.9 (72) | 1.00 | 1.00 | 1.00 | | Ever | 23.1 (15) | 26.2 (65) | 26.1 (121) | 35.1 (39) | 0.85 (0.44, 1.61) | 1.00 (0.70, 1.42) | 1.53 (0.94, 2.47) | | Years of education | | | | | | | | | ≤12 years | 40.0 (26) | 50.8 (126) | 43.0 (199) | 64.0 (71) | 1.00 | 1.00 | 1.00 | | >12 years | 60.0 (39) | 49.2 (122) | 57.0 (264) | 36.0 (40) | 1.55 (0.89, 2.70) | 1.37 (1.01, 1.87) | 0.58 (0.37, 0.92) | | Full-time employment | | | | | | | | | No | 35.4 (23) | 43.3 (107) | 31.8 (147) | 38.2 (42) | 1.00 | 1.00 | 1.00 | | Yes | 64.6 (42) | 56.7 (140) | 38.2 (315) | 61.8 (68) | 1.40 (0.79, 2.46) | 1.64 (1.19, 2.25) | 1.24 (0.78, 1.96) | | Residents in Beijing | | | | | | | | | No | 72.3 (47) | 78.2 (194) | 77.5 (359) | 82.7 (91) | 1.00 | 1.00 | 1.00 | | Yes | 27.7 (18) | 21.8 (54) | 22.5 (104) | 17.3 (19) | 1.38 (0.74, 2.56) | 1.04 (0.72, 1.51) | 0.75 (0.42, 1.34) | | Illicit drug use | | | | | | | | | Never | 95.4 (62) | 95.1 (235) | 98.7 (457) | 96.4 (107) | 1.00 | 1.00 | 1.00 | | Ever | 4.6 (3) | 4.9 (12) | 1.3 (6) | 3.6 (4) | 0.95 (0.26, 3.46) | 0.26 (0.10, 0.69) | 0.73 (0.23, 2.32) | | Alcohol drinking in the past 4 weeks | | | | | | | | | Never | 78.4 (51) | 77.4 (192) | 75.6 (350) | 69.1 (76) | 1.00 | 1.00 | 1.00 | | Rarely | 13.9 (9) | 19.0 (47) | 20.3 (94) | 23.6 (26) | 0.72 (0.33, 1.57) | 1.10 (0.74, 1.62) | 1.40 (0.81, 2.42) | | Often (≥2 times per week) | 7.7 (5) | 3.6 (9) | 4.1 (19) | 7.3 (8) | 2.09 (0.67, 6.51) | 1.16 (0.51, 2.61) | 2.25 (0.84, 6.04) | | Sexual orientation | | | | | | | | | Homosexual | 63.1 (41) | 70.0 (170) | 66.0 (305) | 56.5 (61) | 1.00 | 1.00 | 1.00 | | Heterosexual | 1.5 (1) | 1.2 (3) | 0.9 (4) | 1.8 (2) | 1.38 (0.14, 13.63) | 0.74 (0.16, 3.36) | 1.86 (0.30, 11.39) | | Bisexual | 35.4 (23) | 28.8 (70) | 33.1 (153) | 41.7 (45) | 1.36 (0.76, 2.44) | 1.22 (0.87, 1.71) | 1.79 (1.11, 2.88) | | Preferred anal position | | | | | | | | | Exclusively/mainly receptive | 33.9 (22) | 32.5 (78) | 29.0 (130) | 27.2 (28) | 1.00 | 1.00 | 1.00 | | Both insertive and receptive | 21.5 (14) | 23.8 (57) | 23.0 (103) | 18.5 (19) | 0.87 (0.41, 1.85) | 1.08 (0.71, 1.66) | 0.93 (0.47, 1.82) | | Exclusively/mainly insertive | 44.6 (29) | 43.8 (105) | 48.0 (215) | 54.4 (56) | 0.98 (0.52, 1.83) | 1.23 (0.85, 1.77) | 1.49 (0.87, 2.55) | | Unprotected anal sex in the past 6 months | | | | | | | | | No | 63.1 (41) | 73.8 (183) | 77.3 (358) | 80.2 (89) | 1.00 | 1.00 | 1.00 | | Yes | 36.9 (24) | 26.2 (65) | 22.7 (105) | 19.8 (22) | 1.65 (0.93, 2.94) | 0.83 (0.58, 1.18) | 0.70 (0.40, 1.20) | | Multiple concurrent male sexual partners in the past 12 months | | | | | | | | | No | 87.7 (57) | 91.9 (228) | 93.7 (434) | 95.5 (106) | 1.00 | 1.00 | 1.00 | | Yes | 12.3 (8) | 8.1 (20) | 6.3 (29) | 4.5 (5) | 1.60 (0.67, 3.82) | 0.76 (0.42, 1.38) | 0.54 (0.20, 1.47) | | Traded sex for money in the past 12 months | | | | | | | | | No | 92.3 (60) | 95.2 (236) | 96.5 (447) | 91.9 (102) | 1.00 | 1.00 | 1.00 | | Yes | 7.7 (5) | 4.8 (12) | 3.5 (16) | 8.1 (9) | 1.64 (0.56, 4.83) | 0.70 (0.33, 1.51) | 1.74 (0.71, 4.25) | | Forced to have sex with any male sexual partners in the past 12 months | | | | | | | | | No | 93.8 (61) | 96.0 (238) | 97.4 (451) | 96.4 (107) | 1.00 | 1.00 | 1.00 | | Yes | 6.2 (4) | 4.0 (10) | 2.6 (12) | 3.6 (4) | 1.56 (0.47, 5.15) | 0.63 (0.27, 1.49) | 0.89 (0.27, 2.90) | | Self-reported history of sexually transmitted diseases | | | | | | | | | No | 59.4 (38) | 76.0 (184) | 77.1 (346) | 84.1 (90) | 1.00 | 1.00 | 1.00 | | Yes | 40.6 (26) | 24.0 (58) | 22.9 (103) | 15.9 (17) | 2.17 (1.22, 3.88) | 0.94 (0.65, 1.36) | 0.60 (0.33, 1.09) | | Ever had sex with female sexual partner(s) | | | | | | | | | No | 52.3 (34) | 59.7 (148) | 55.3 (256) | 42.3 (47) | 1.00 | 1.00 | 1.00 | | Yes | 47.7 (31) | 40.3 (100) | 44.7 (207) | 57.7 (64) | 1.35 (0.78, 2.34) | 1.20 (0.88, 1.64) | 2.02 (1.28, 3.17) | | Circumcision status by exam | | | | | | | | | Uncircumcised | 92.2 (59) | 90.3 (215) | 92.6 (411) | 92.7 (102) | 1.00 | 1.00 | 1.00 | | Circumcised | 7.8 (5) | 9.7 (23) | 7.4 (33) | 7.3 (8) | 0.79 (0.29, 2.17) | 0.75 (0.43, 1.31) | 0.73 (0.32, 1.70) | | Time since last HIV testing (month) | | | | | | | | | <3 | 44.6 (29) | 27.8 (69) | 30.9 (143) | 36.9 (41) | 1.00 | 1.00 | 1.00 | | ≥3 or never | 55.4 (36) | 72.2 (179) | 69.1 (320) | 63.1 (70) | 0.48 (0.27, 0.84) | 0.86 (0.61, 1.21) | 0.66 (0.41, 1.06) | | HIV seropositivity | | | | | | | | | No | 89.2 (58) | 93.2 (231) | 96.3 (446) | 94.6 (105) | 1.00 | 1.00 | 1.00 | | Yes | 10.8 (7) | 6.8 (17) | 3.7 (17) | 5.4 (6) | 1.64 (0.65, 4.14) | 0.52 (0.26, 1.03) | 0.78 (0.30, 2.03) | | Syphilis seropositivity | | | | | | | | | No | 78.5 (51) | 81.0 (201) | 86.2 (399) | 79.3 (88) | 1.00 | 1.00 | 1.00 | | Yes | 21.5 (14) | 19.0 (47) | 13.8 (64) | 20.7 (23) | 1.17 (0.60, 2.30) | 0.69 (0.45, 1.04) | 1.12 (0.64, 1.95) |
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