|   | 
        Study Site  | 
          | 
       
      
        | Variable | 
        Jackson, MS 
          (n = 570) | 
        Washington,    DC 
          (n = 543 ) | 
        Oakland, CA 
          (n = 339) | 
        p† | 
       
      
        | Mean Age (SD) | 
        30.2+10.1 | 
        36.7+12.3 | 
        40.7+11.6 | 
        <0.01 | 
       
      
        Education 
          <High    school   # .001 
          High    school   83 
          College    graduate 
          Graduate School          | 
         16.1% 
            63.8% 
            16.3% 
            3.7% | 
         15.7% 
            74.6% 
            7.6% 
            2.2% | 
         27.8% 
            61.5% 
            9.5% 
            1.2% | 
         <0.01 | 
       
      
        Marital Status 
          Single 
          Married 
          Divorced, Separated, or Widowed | 
         76.5% 
            14.4% 
            9.2% | 
         72.4% 
            9.2% 
            18.4% | 
         72.3% 
            9.7% 
            18.0% | 
         <0.01 | 
       
      
        Income 
          <$10,000 
          $10,000 - $19,999 
          $20,000 - $34,999 
          $35,000 -$49,999 
          ≥ $50,000 | 
         45.3% 
            19.6% 
            18.8% 
            10.0% 
            6.4% | 
         43.1% 
            13.6% 
            20.1% 
            13.6% 
            9.5% | 
         64.6% 
            18.6% 
            5.6% 
            7.1% 
            4.2% | 
          <0.01 | 
       
      
        | Injected drugs | 
        3.2% | 
        5.7% | 
        5.3% | 
        NS | 
       
      
        | Smoked crack cocaine | 
        8.4% | 
        10.3% | 
        25.7% | 
        <0.01 | 
       
      
        | Sex partner had STI | 
        5.9% | 
        6.0% | 
        3.7% | 
        NS | 
       
      
        | Sex with IDU | 
        3.9% | 
        7.8% | 
        5.3% | 
        <0.05 | 
       
      
        | Had STI | 
        6.5% | 
        3.8% | 
        3.0% | 
        <0.05 | 
       
      
        | Exchanged sex for drugs    or money | 
        8.4% | 
        12.3% | 
        9.8% | 
        NS | 
       
      
        | Sex partner recently in    jail (women only) | 
        20.3% | 
        18.6% | 
        24.7% | 
        NS | 
       
      |