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Table 2 Univariate and multivariate analyses of participants characteristics associated with incident HIV infection among Kunming MSM (N=378)

From: Prospective cohort study of HIV incidence and molecular characteristics of HIV among men who have sex with men(MSM) in Yunnan Province, China

Factors No. of HIV seroconversion Cumulative PY HIV incidence(/100PY) Hazard ratios (95% CI)
     Univariate Multivariate
Age(years)      
≥30 4 143.2 2.8   
18-29 7 169.0 4.1 2.0(0.6-6.9) -
Ethnicity      
Han 6 262.8 2.3   
Non-Han 5 49.3 10.1 4.2(1.3-13.8) 5.7(1.5-21.5)
Occupations      
Other occupations 4 218.3 1.8   
Male students 4 51.7 7.7 4.1(1.1-16.3) 5.7(1.3-24.3)
Male retirees 3 42.1 7.1 4.0(1.0-17.8) 4.1(1.0-18.6)
Preferred major sexual roles with male sexual partners      
Single insertive anal sexual role 1 125.7 0.8   
Receptive or both insertive and receptive anal sexual role 10 186.4 5.4 6.6(0.8-51.6) -
Main location to seek homosexual partners      
Bar/night club/tearoom 2 35.1 5.7   
Bathing room/sauna/massage room 3 25.3 11.9 2.2(0.4-13.0) -
Park/public restroom/square 0 44.4 0.0 NA -
Internet 5 139.6 3.6 0.6(0.1-3.1) -
Other ways 1 67.7 1.5 0.4(0.0-2.8) -
The number of occasional male sexual partners in recent 6 months      
0-1 5 168.3 3.0   
>1 6 143.8 4.2 1.5(0.4-4.8) -
Bleeding experience after receptive anal intercourse      
No 5 262.6 1.9   
Yes 6 49.6 12.1 6.1(1.9-20.1) 7.6(2.2-26.6)
Condom using conditions for the last receptive anal intercourse      
No 6 239.5 2.5   
Yes 5 72.6 7.7 2.8(0.9-9.3) -
Buying sex from males in recent 6 months      
No 10 296.2 3.4   
Yes 1 15.9 6.3 1.9(0.2-14.5) -
Selling sex from males in recent 6 months      
No 1 301.8 0.3   
Yes 0 10.4 0.0 NA -
Illegal drug using behaviors      
No 11 304.0 3.6   
Yes 0 8.2 0.0 NA -
Male circumcision      
No 9 213.5 4.2   
Yes 2 98.6 2.0 0.8(0.1-6.0) -
Syphilis infection      
No 8 291.6 2.7   
Yes 3 20.5 14.6 5.6(1.5-21.3) 17.7(3.6-86.4)
Failed to use condom with regular male sexual partners during receptive anal sex in the follow-up      
No 2 94.3 2.1   
Yes 9 217.7 4.1 1.9(0.4-8.8) -
Failed to use condom with regular male sexual partners during receptive anal sex in the follow-up      
No 1 96.9 1.0   
Yes 10 215.2 4.6 4.4(0.6-34.7) -
  1. NA: None applicable; CI, confidence interval; PY, person year.