| Characteristics | 
        Men (n    = 220)  | 
        Women    (n = 87)  | 
        p-valuea  | 
       
      
        | Age (25 years or less) | 
        56.8%  | 
        48.3%  | 
        0.18  | 
       
      
        | Being married | 
        16.8%  | 
        31.0%  | 
        0.006  | 
       
      
        | Some higher education | 
        48.6%  | 
        55.2%  | 
        0.30  | 
       
      
        | Monthly income < 15,000 rubles | 
        32.3%  | 
        69.0%  | 
        <0.0001  | 
       
      
        | Unemployed | 
        40.0%  | 
        47.1%  | 
        0.25  | 
       
      
        | Ever had an STIb | 
        34.1%  | 
        39.1%  | 
        0.41  | 
       
      
        | Number of sexual partner, past 3 months | 
         | 
         | 
        0.02  | 
       
      
        |              1 | 
        24.1%  | 
        36.8%  | 
         | 
       
      
        |              2 | 
        29.1%  | 
        33.3%  | 
         | 
       
      
        |              3 or more | 
        46.8%  | 
        29.9%  | 
         | 
       
      
        | Commercial sex workers | 
        4.1%  | 
        2.3%  | 
        0.73c  | 
       
      
        | Intravenous drug use | 
        4.5%  | 
        1.1%  | 
        0.19e  | 
       
      
        | Alcohol misuse identified by AUDIT scored | 
        84.1%  | 
        44.8%  | 
        <0.0001  | 
       
      
        | Depressive symptoms | 
        17.3%  | 
        27.6%  | 
        0.04  | 
       
     
      aObtained from the Chi-squared test when not otherwise specified. 
      bSTI: sexually transmitted infection. 
      cObtained from Fisher’s exact test. 
      dAUDIT: the Alcohol Use Disorders IdentificationTest; scores ≥ 8 indicate alcohol 
    misuse. 
    eIdentified by the CES-D-10: Center for Epidemiologic Studies Depression 
    Scale. The mean and median CES-D-10 scores were 6.1 and 5.0, respectively;
    CES-D-10 scores ≥ 10 indicate depressive symptoms. |