|   | 
        Characteristics | 
        Frequency (N=636) | 
        Percentage | 
      
      
        | Used drugs | 
        Yes | 
        78 | 
        12.3 | 
      
      
        |   | 
        No | 
        558 | 
        87.7 | 
      
      
        | Type of drugs (n=78)* | 
        Heroin/ Cocaine | 
        8 | 
        10.3 | 
      
      
        |   | 
        Khat | 
        65 | 
        83.3 | 
      
      
        |   | 
        Hashish/ Mariwana | 
        30 | 
        38.5 | 
      
      
        |   | 
         Benzene  | 
        2 | 
        2.6 | 
      
      
        |   | 
        Others  | 
        69 | 
        88.5 | 
      
      
        | Have strong desire for sex after    drug use (n=78)* | 
        Yes | 
        16 | 
        20.5 | 
      
      
        |   | 
        No | 
        62 | 
        79.5 | 
      
      
        | Alcohol drink | 
        Yes | 
        214 | 
        33.6 | 
      
      
        |   | 
        No | 
        422 | 
        66.4 | 
      
      
        | Age at drinking alcohol (n=631)* | 
        Less than 18 years | 
        618 | 
        97.9 | 
      
      
        |   | 
        Greater or equal to 18 years | 
        13 | 
        2.1 | 
      
      
        | Usually had sex after drink alcohol    (n=214)* | 
        Yes  | 
        19 | 
        8.9 | 
      
      
        |   | 
        No  | 
        195 | 
        91.1 | 
      
      
        | View pornographic materials  | 
        Yes | 
        339 | 
        53.3 | 
      
      
        |   | 
        No | 
        297 | 
        46.7 | 
      
      
        | Age at viewing pornographic    materials (n=339)* | 
        Less than 18 years | 
        321 | 
        94.7 | 
      
      
        |   | 
        Greater or equal to 18 years | 
        18 | 
        5.3 | 
      
      
        | Type of pornographic materials viewed    (n=339)* | 
        Magazine | 
        38 | 
        11.2 | 
      
      
        |   | 
        Films & videos | 
        291 | 
        85.8 | 
      
      
        |   | 
        Pictures  | 
        150 | 
        44.2 | 
      
      
        |   | 
        Others | 
        3 | 
        0.9 | 
      
      
        | *Sample size varies due to missing responses. Analysis was done for    valid cases. |