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Table 2 Crude and adjusted estimates of sexual behaviors, prevention behaviors, risk perception, and serological results among MSM in Wenzhou (N = 424)

From: Risky sexual networks and concentrated HIV epidemics among men who have sex with men in Wenzhou, China: a respondent-driven sampling study

 

N (Crude %)

Weighted % (95 % CI)*

Places to find sexual partners mostly

 

 Gay bar

57 (13.4)

13.7 (8.4–18.8)

 Bathhouse

33 (7.8)

7.3 (3.2–11.9)

 Park

154 (36.3)

31.5 (24.2–39.8)

 Internet

162 (38.2)

42.6 (34.8–52.3)

 Other

18 (4.2)

4.9 (2.1–7.9)

Age of first homosexual sex

  

 ≤19

85 (20.0)

18.2 (12.3–23.6)

 20–29

220 (51.9)

49.3 (42.2–56.5)

≥30

119 (28.1)

32.6 (26.1–40.6)

Anal sex during previous half year

 

Number of anal sex partners

 0

38 (9.0)

11.2 (6.7–16.50

 1

134 (31.6)

42.0 (35.6–49.8)

 ≥2

252 (50.4)

46.8 (39.0–52.6)

General condom use during anal sex (n = 386)

 

 Always

174 (45.1)

41.9 (35.1–49.4)

 Sometimes

161 (41.7)

43.2 (35.6–49.5)

 Ever

51 (13.2)

14.9 (9.6–21.3)

Anal sex with regular partner

  

 No

198 (46.7)

45.9 (38.9–53.1)

 Yes

226 (53.3)

54.1 (46.9–61.1)

Anal sex with casual partner

  

 No

143 (33.7)

41.6 (35.1–49.5)

 Yes

281 (61.3)

58.4 (50.5–64.9)

Anal sex with commercial partner

 

 No

396 (93.4)

95.5 (93.1–97.9)

 Yes

28 (6.6)

4.5 (2.1–6.9)

Anal sex with group

  

 No

406 (95.8)

97.8 (96.1–99.2)

 Yes

18 (4.2)

2.2 (0.8–3.9)

Anal sex after drinking alcohol

  

 No

382 (90.1)

92.1 (88.3–95.7)

 Yes

42 (9.9)

7.9 (4.3–11.7)

Anal sex after using drugs

  

 No

406 (95.8)

96.5 (94.5–98.7)

 Yes

18 (4.2)

3.5 (1.3–5.5)

Oral sex during previous half year

 

Number of oral sex partners

 0

76 (17.9)

20.3 (15.2–27.1)

 1

131 (30.9)

36.9 (30.3–44.8)

 ≥2

217(51.2)

42.8 (35.0–48.3)

General condom use during oral sex (n = 348)

 

 Always

69 (19.8)

19.6 (13.9–26.0)

 Sometimes

83 (23.9)

22.6 (16.5–32.5)

 Never

196 (56.3)

57.8 (47.2–64.7)

Oral sex with regular partner

  

 No

234 (55.2)

54.5 (47.4–61.9)

 Yes

190 (44.8)

45.5 (38.1–52.6)

Oral sex with casual partner

  

 No

174 (41.0)

46.8 (40.5–54.7)

 Yes

250 (59.0)

53.2 (45.3–59.5)

Oral sex with commercial partner

 

 No

405 (95.5)

97.1 (94.9–99.0)

 Yes

19 (4.5)

2.9 (1.0–5.1)

Sex with women during previous half year

 

Number of female sex partners

 

 0

270 (63.7)

58.9 (52.1–65.8)

 1

113 (26.7)

31.7 (24.7–38.4)

 ≥2

41 (9.7)

9.4 (5.8–13.8)

General condom use during sex with women (n = 154)

 

 Always

48 (31.2)

36.9 (22.1–54.4)

 Sometimes

34 (22.1)

15.7 (−)

 Never

72 (46.8)

47.4 (40.1–71.6)

Sex with regular female partner

 

 No

309 (72.9)

70.7 (64.0–77.1)

 Yes

115 (27.1)

29.3 (22.9–36.0)

Sex with casual female partner

 

 No

382 (90.1)

89.1 (84.8–93.1)

 Yes

42 (9.9)

10.9 (6.9–15.2)

Sex with commercial female partner

 

 No

396 (93.4)

91.8 (87.1–95.7)

 Yes

28 (6.6)

8.2 (4.3–12.9)

Prevention behaviors, risk perception and serological results

 

Exposure to HIV prevention during the previous year

 

 No

183 (43.2)

46.5 (39.8–54.7)

 Yes

241 (56.8)

53.5 (45.3–60.2)

Ever HIV testing lifetime

  

 No

204 (48.1)

51.9 (44.9–60.3)

 Yes

220 (51.9)

48.1 (39.7–55.1)

Risk perception for HIV

  

 Impossible

192 (45.3)

49.2 (41.5–56.6)

 Somewhat possible

164 (38.7)

36.8 (29.4–43.6)

 Possible

68 (16.0)

14.1 (10.1–19.2)

HIV infection

  

 Negative

326 (76.9)

77.2 (71.5–83.1)

 Positive

98 (23.1)

22.8 (16.9–28.5)

Current syphilis infection

  

 Negative

372 (87.7)

90.3 (86.4–93.6)

 Positive

52 (12.3)

9.7 (6.4–13.6)

HIV and syphilis co-infection

  

 Negative

401 (94.6)

96.0 (93.5–98.2)

 Positive

23 (5.4)

4.0 (1.8–98.2)

  1. *Respondent driven sampling data were adjusted according to the network size and recruitment pattern. CI, confidence interval