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Table 3 Bivariate and multivariate analyses to determine the associations between potential predictors and recent HIV infection among participating MSM in seven Chinese cities (N = 4238a)

From: High HIV incidence epidemic among men who have sex with men in china: results from a multi-site cross-sectional study

Variable     Crude Model Adjusted Modelb
N Recent HIV infection cOR (95 % CI) P Value aOR (95 % CI) P Value
  Frequency %     
Sexual orientation
 Other orientation 1 750 60 3.4 Ref   Ref  
 Homosexual orientation 2 488 126 5.1 1.5 ( 1.1 ~ 2.1 ) 0.01 1.6 ( 1.1 ~ 2.2 ) 0.01
Occupations
 Non-students 3 684 160 4.3 Ref   Ref  
 Students 554 26 4.7 1.1 ( 0.7 ~ 1.7 ) 0.71 0.8 ( 0.5 ~ 1.3 ) 0.30
Monthly income (USD)       
 No income 747 31 4.2 Ref   Ref  
 1-600 1 908 86 4.5 1.1 ( 0.7 ~ 1.7 ) 0.69 1.5 ( 1.0 ~ 2.4 ) 0.06
  > = 600 1 583 69 4.4 1.1 ( 0.7 ~ 1.8) 0.82 1.6 ( 1.0 ~ 2.6 ) 0.06
Ethnics
 Non-Han 276 12 4.4 Ref   Ref  
 Han 3 962 174 4.4 1.0 ( 0.6 ~ 1.8 ) 0.97 1.1 ( 0.6 ~ 2.1 ) 0.74
Main venue of seeking male sexual partners
 Non-Internet 1 359 56 4.1 Ref   Ref  
 Internet 2 879 130 4.5 1.1 ( 0.8 ~ 1.5 ) 0.56 1.0 ( 0.7 ~ 1.4 ) 0.98
Knowledge about prevention of HIV
 Inadequate 2 335 77 3.3 Ref   Ref  
 Adequate 1 903 109 5.7 1.8 ( 1.3 ~ 2.4 ) <0.01 1.4 ( 1.0 ~ 2.0 ) 0.04
Age of initial sex (years)
 0-15 271 7 2.6 Ref   Ref  
 16-25 3 617 169 4.7 1.9 ( 0.9 ~ 4.0 ) 0.12 1.5 ( 0.7 ~ 3.3 ) 0.30
  > = 26 350 10 2.9 1.1 ( 0.4 ~ 3.0 ) 0.84 1.0 ( 0.4 ~ 2.8 ) 0.98
Gender of initial sexual partner
 Female 1 467 63 4.3 Ref   Ref  
 Male 2 771 123 4.4 1.0 ( 0.8 ~ 1.4 ) 0.83 1.0 ( 0.7 ~ 1.5 ) 0.84
Anal sexual experience in last 6 months
 No 253 5 2.0 Ref   Ref  
 Yes 3 985 181 4.5 2.4 ( 1.0 ~ 5.8 ) 0.06 2.4 ( 1.0 ~ 5.9) 0.06
Predominant sex position in last 6 months
 Receptive only or both 2 975 147 4.9 Ref   Ref  
 Insertive only 1 263 39 3.1 0.6 ( 0.4 ~ 0.9 ) 0.01 0.5 ( 0.4 ~ 0.8 ) <0.01
Used condom at last anal sex with male partners
 No 1 168 57 4.9 Ref   Ref  
 Yes 3 070 129 4.2 0.9 ( 0.6 ~ 1.2 ) 0.34 0.9( 0.7 ~ 1.3 ) 0.52
No. of male sexual partners in last 6 months
  < =2 2 614 100 3.8 Ref   Ref  
  > 2 1 624 86 5.3 1.4 ( 1.1 ~ 1.9 ) 0.02 1.4 ( 1.1 ~ 1.9 ) 0.02
Used condom at last oral sex with male partners
 No 3 841 169 4.4 Ref   Ref  
 Yes 397 17 4.3 1.0 ( 0.6 ~ 1.6 ) 0.91 0.9 ( 0.5 ~ 1.5 ) 0.66
Having foreign male sexual partners in last 6 months
 No 4 188 181 4.3 Ref   Ref  
 Yes 50 5 10.0 25 ( 1.0 ~ 63 ) 0.06 1.8 ( 0.7 ~ 4.7 ) 0.220
Having female sexual partners in last 6 months
 No 3 463 158 4.6 Ref   Ref  
 Yes 775 28 3.6 0.8 ( 0.5 ~ 1.2 ) 0.24 0.8 ( 0.5 ~ 1.3 ) 0.33
Recreational drug use in last 6 months
 No 3 055 116 3.8 Ref   Ref  
 Yes 1 183 70 5.9 1.6 ( 1.2 ~ 2.2 ) 0.01 2.2 ( 1.6 ~ 3.0 ) <0.01
STDs-related symptoms in last year
 No 3 924 165 4.2 Ref   Ref  
 Yes 314 21 6.7 1.6 ( 1.0 ~ 2.6 ) 0.04 1.7 ( 1.1 ~ 2.8 ) 0.03
Anal bleeding in the last 6 months
 No 3 591 137 3.8 Ref   Ref  
 Yes 647 49 7.6 2.1 ( 1.5 ~ 2.9 ) <0.01 2.1 ( 1.4 ~ 3.0 ) <0.01
Condom breakage during anal intercourse in last 6 months
 No 3 864 164 4.2 Ref   Ref  
 Yes 374 22 5.9 1.4 ( 0.9 ~ 2.2 ) 0.14 1.5 ( 0.9 ~ 2.4 ) 0.11
Circumcision experience
 No 3 882 160 4.1 Ref   Ref  
 Yes 356 26 7.3 1.8 ( 1.2 ~ 2.8 ) 0.01 2.0( 1.3 ~ 3.1 ) 0.01
Syphilis infection status
 No 3 908 153 3.9 Ref   Ref  
 Yes 330 33 10.0 2.7 ( 1.8 ~ 4.1 ) <0.01 2.8 ( 1.9 ~ 4.3 ) <0.01
HSV-2 infection status
 No 3 680 142 3.9 Ref   Ref  
 Yes 481 36 7.5 2.0 (1.4 ~ 2.9 ) <0.01 2.3 (1.5 ~ 3.3 ) <0.01
  1. a258 MSM participants were not analyzed here, in which 250 were BED-CEIA detected established HIV infected participants and 8 were HIV antibody positive participants failing to be tested by BED-CEIA for lack of sufficient samples
  2. bThe models were adjusted for age (continuous), study site (Shanghai, Nanjing, Changsha, Zhengzhou, Ji’nan, Shenyang and Kunming), residence (local/migrants), education (illiterate/attended primary school, junior high school, senior high school or equal/college or above) and marital status (never married/ever married)