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Table 4 Logistic regression of HIV infection among men who have sex with men in Guangxi (surveys from all 5 years, 2008–2012)

From: HIV and syphilis prevalence trends among men who have sex with men in Guangxi, China: yearly cross-sectional surveys, 2008–2012

   Infection Adjusted odds  
Variable N n(%) Ratio OR (95% CI) P-value
HIV infection by year 0.001
  2008 1146 20(1.7%) 1  
  2009 1351 17(1.3%) 0.72(0.37,1.39) 0.32
  2010 1245 40(3.2%) 1.78(1.02,3.12) 0.04
  2011 1299 35(2.7%) 1.59(0.90,2.81) 0.11
  2012 1280 47(3.7%) 2.06(1.20,3.55) 0.01
Had sex with female in the past six months 0.03
  No 4924 135(2.7%) 1  
  Yes 1372 22(1.6%) 0.60(0.38,0.95)  
Current syphilis infection <0.001
  No 5892 118(2.0) 1  
  Yes 429 41(9.6%) 5.07(3.49,7.37)  
  1. Note: Variables of HIV infection by year, had sex with female in the past six months, and current syphilis infection were included in the multivariate model.