Table 1.
Crude and Adjusted Demographic, Behavioral, and HIV Prevalence Indicators of MSM in Beijing, 2009 (n=500)
| Variable | Homophily | Equilibrium samplea% | Crudeb,c% (n) | Adjusted % (95% CI) |
|---|---|---|---|---|
| Age (median 29, range 18–71) | ||||
| 18–25 | 0.126 | 34.9 | 34.6 (173) | 36.4 (29.3–43.2) |
| >25 | 0.181 | 65.1 | 65.4 (327) | 63.6 (56.8–70.7) |
| Ethnicity | ||||
| Han | −0.024 | 93.7 | 93.6 (468) | 96.0 (93.9–97.7) |
| Others | 0.024 | 6.3 | 6.4 (32) | 4.0 (2.3–6.1) |
| Education | ||||
| No education/elementary primary school | 0.118 | 5.6 | 5.8 (29) | 4.8 (2.2–8.4) |
| Middle school | 0.096 | 27.0 | 26.8 (134) | 26.7 (21.1–32.8) |
| High school | 0.015 | 32.8 | 32.6 (163) | 35.6 (29.0–42.4) |
| College or above | 0.339 | 34.6 | 34.8 (174) | 32.9 (25.7–39.8) |
| Current marital status | ||||
| Married | 0.203 | 22.5 | 20.8 (104) | 27.2 (20.4–36.2) |
| Unmarried | 0.387 | 77.5 | 79.2 (396) | 72.8 (63.8–79.6) |
| Occupation/work status | ||||
| Employed | 0.226 | 85.3 | 85.4 (427) | 82.5 (76.5–88.0) |
| Not employed | 0.104 | 9.2 | 9.2 (46) | 9.0 (5.5–12.9) |
| Student | 0.082 | 5.5 | 5.4 (27) | 8.6 (3.9–13.6) |
| Monthly income in the past 12 months (CNY) | ||||
| None | 0.011 | 11.8 | 11.6 (58) | 15.7 (10.4–21.5) |
| <1000 | 0.036 | 9.3 | 9.4 (47) | 8.0 (4.7–11.7) |
| 1000–2999 | −0.018 | 54.2 | 54.2 (271) | 56.8 (50.3–62.8) |
| 3000–4999 | 0.006 | 15.9 | 16.0 (80) | 12.4 (9.5–16.7) |
| ≥5000 | 0.208 | 8.8 | 8.8 (44) | 7.0 (3.6–11.5) |
| Beijing permanent residents | 0.145 | 17.2 | 18.2 (91) | 12.0 (8.5–16.1) |
| Have health insurance | 0.121 | 46.1 | 47.2 (236) | 45.6 (39.5–52.7) |
| Sexual orientation | ||||
| Homosexual | 0.154 | 68.2 | 69.2 (346) | 61.7 (55.4–68.4) |
| Heterosexual | −0.999 | 1.1 | 1.0 (5) | 1.7 (0.2–3.4) |
| Bisexual | −0.259 | 30.1 | 29.4 (147) | 34.7 (29.3–41.1) |
| Do not know | 0.236 | 0.5 | 0.4 (2) | 1.8 (0–4.1) |
| Self-reported role in anal sex with males | ||||
| Insertive | −0.162 | 26.7 | 27.1 (133) | 29.6 (24.5–36.2) |
| Both insertive and receptive | 0.145 | 59.7 | 59.4 (291) | 53.7 (46.4–59.6) |
| Receptive | −0.367 | 13.6 | 13.5 (66) | 16.7 (11.7–22.8) |
| Had male sexual partner in the past 6 months | 0.251 | 97.6 | 97.6 (488) | 96.7 (93.6–98.9) |
| Type of the most recent male partner in the past 6 months | ||||
| Regular partner | 0.199 | 63.5 | 63.3 (309) | 60.8 (53.6–67.7) |
| Casual partner | 0.100 | 36.5 | 36.7 (179) | 39.2 (32.3–46.4) |
| Number of male sexual partners >1 in the past 6 months | 0.368 | 69.8 | 71.4 (357) | 61.2 (54.5–68.5) |
| Unprotected insertive anal sex with the most recent male partner in the past 6 months | −0.075 | 36.2 | 36.6 (127) | 34.8 (28.3–42.3) |
| Unprotected receptive anal sex with the most recent male partner in the past 6 months | −0.013 | 40.8 | 40.4 (115) | 40.5 (31.5–48.1) |
| Ever had sex with female | 0.051 | 56.8 | 56.6 (283) | 61.2 (54.2–67.8) |
| Had female sexual partner in the past 6 months | −0.147 | 21.1 | 20.8 (104) | 25.8 (19.4–32.2) |
| Unprotected sex with female sexual partner in the past 6 months | −0.099 | 76.2 | 72.1 (75) | 79.6 (65.8–97.8) |
| Discussed HIV status with the most recent male partner | 0.100 | 51.1 | 52.0 (253) | 48.6 (42.4–56.5) |
| Self-known the HIV status | −0.004 | 68.4 | 64.7 (320) | 49.7 (41.9–56.4) |
| Known the HIV status of the most recent male partner | 0.041 | 25.7 | 26.4 (129) | 22.8 (18.3–28.2) |
| Told the most recent male partner your HIV status | 0.064 | 47.1 | 48.4 (236) | 45.6 (38.7–52.3) |
| Known where to get HIV test | 0.502 | 93.8 | 94.2 (470) | 89.0 (84.2–94.0) |
| Ever had a HIV test | 0.399 | 64.4 | 66.8 (334) | 51.4 (43.3–58.6) |
| Had a HIV test in the past 12 months | 0.283 | 52.6 | 53.2 (266) | 39.3 (33.6–46.0) |
| Received free condoms/lubricant in the past 12 months | 0.401 | 87.2 | 87.2 (436) | 78.0 (72.4–84.6) |
| Bought condoms in the past 12 months | 0.066 | 50.9 | 49.8 (249) | 52.0 (44.9–58.4) |
| Non-injection drug use in the past 12 months | −0.991 | 0.9 | 0.8 (4) | 0.1 (0–0.1) |
| HIV positive | 0.058 | 7.4 | 7.2 (36) | 8.0 (4.6–12.2) |
| Syphilis positive | 0.023 | 22.1 | 22.0 (110) | 22.0 (16.8–27.0) |
| Both HIV and Syphilis positive | −1.0 | 3.0 | 3.0% (15) | 4.2 (1.8–7.2) |
a
Composition of the sample when the sample reached stability.
b
Subgroups do not always add up to totals due to missing data.
c
Composition of the sample at the end of data collection.
MSM, men who have sex with men; CI, confidence interval.