| Characteristics | 
        Model 1-Knowledge | 
        Model 2-
                Attitude | 
        Model 3-
               Peer | 
        Model 4-
                Family | 
        Model 5-
                School | 
        Model 6-
                Overall | 
      
      
        | Area (Rural) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | Urban  | 
        0.61 (0.41-0.91) | 
        0.52 (0.35-0.78) | 
        0.84 (0.54-1.30) | 
        0.58 (0.39-0.86) | 
        0.67 (0.44-1.03) | 
        0.88 (0.54-1.44) | 
      
      
        | Sub-urban | 
        0.78 (0.50-1.22) | 
        0.69 (0.44-1.08) | 
        0.97 (0.60-1.57) | 
        0.74 (0.48-1.15) | 
        0.75 (0.47-1.18) | 
        0.96 (0.57-1.63) | 
      
      
        | Grade (8th) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | 7th  | 
        0.59 (0.44-0.80) | 
        0.68 (0.50-0.92) | 
        0.83 (0.60-1.15) | 
        0.64 (0.48-0.86) | 
        0.67 (0.49-0.91) | 
        0.82 (0.58-1.16) | 
      
      
        | Do you think smoking can cause the following diseases: | 
        
      
        | Bronchitis    (Yes) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No | 
        1.49 (0.99-2.23) | 
          | 
          | 
          | 
          | 
        1.33 (0.84-2.09) | 
      
      
        | Hypertension(Yes)  | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No | 
        0.85 (0.58-1.25) | 
          | 
          | 
          | 
          | 
        0.97 (0.63-1.51) | 
      
      
        | Lung cancer    (Yes)  | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No  | 
        2.73 (1.59-4.70) | 
          | 
          | 
          | 
          | 
        1.79 (0.94-3.41) | 
      
      
        | heart attack (Yes)  | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No  | 
        1.22 (0.82-1.81) | 
          | 
          | 
          | 
          | 
        1.07 (0.69-1.67) | 
      
      
        | Stroke    (Yes)  | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No  | 
        0.91 (0.62-1.33) | 
          | 
          | 
          | 
          | 
        0.95 (0.62-1.47) | 
      
      
        | Do you think smoking can help people relax? (No) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | Yes  | 
          | 
        2.32 (1.62-3.31) | 
          | 
          | 
          | 
        1.89 (1.28-2.80) | 
      
      
        | Do you think smoking boys are more attractive? (No difference) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | More attractive | 
          | 
        1.41 (0.79-2.53) | 
          | 
          | 
          | 
        1.65 (0.87-3.13) | 
      
      
        | Less attractive | 
          | 
        0.64 (0.43-0.96) | 
          | 
          | 
          | 
        0.94 (0.60-1.47) | 
      
    
      
        | Do you think smoking    girls are more attractive? (No difference) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | More attractive | 
          | 
        1.61 (0.89-2.90) | 
          | 
          | 
          | 
        0.92 (0.48-1.76) | 
      
      
        | Less attractive | 
          | 
        0.87 (0.58-1.32) | 
          | 
          | 
          | 
        0.75 (0.48-1.19) | 
      
      
        | As far as you know, does any of your friends or classmates    smoke? (Most of or all) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | None | 
          | 
          | 
        0.22 (0.11-0.45) | 
          | 
          | 
        0.38 (0.18-0.79) | 
      
      
        | Some | 
          | 
          | 
        0.48 (0.24-0.96) | 
          | 
          | 
        0.62 (0.30-1.30) | 
      
      
        | Do you think your    parent would not mind your smoking after you grow up? (Yes) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No  | 
          | 
          | 
          | 
        0.50 (0.34-0.75) | 
          | 
        0.95 (0.57-1.60) | 
      
      
        | In a typical week, how    many days do people smoke in your presence at home? (1-7 days) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | None  | 
          | 
          | 
          | 
        0.78 (0.58-1.07) | 
          | 
        1.11 (0.77-1.61) | 
      
      
        | In the past week, did you see your    teachers smoking? (Yes) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No | 
          | 
          | 
          | 
          | 
        0.61 (0.45-0.84) | 
        0.70 (0.48-1.01) | 
      
      
        | In the past semester, did the school distribute any tobacco control    material to you? (Yes) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No  | 
          | 
          | 
          | 
          | 
        0.82 (0.55-1.23) | 
        0.90 (0.58-1.41) | 
      
    
      
        | In the past semester, did you watch any video    or TV program on tobacco control on campus? (Yes) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No | 
          | 
          | 
          | 
          | 
        0.65 (0.41-1.03) | 
        0.61 (0.36-1.03) | 
      
      
        | In the past semester, did anyone in your    school teach you that smokers would have yellow teeth, wrinkles, or bad    smell? (Yes) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No  | 
          | 
          | 
          | 
          | 
        0.99 (0.67-1.46) | 
        1.05 (0.69-1.62) | 
      
      
        | In the past semester, did anyone in your    school teach you skills on how to refuse smoking?    (Yes) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | No  | 
          | 
          | 
          | 
          | 
        1.09 (0.72-1.65) | 
        1.12 (0.70-1.79) | 
      
      
        | Do you often see anti-smoking information on    campus? (very often) | 
          | 
          | 
          | 
          | 
          | 
          | 
      
      
        | None | 
          | 
          | 
          | 
          | 
        1.80 (1.16-2.79) | 
        1.16 (0.71-1.91) | 
      
      
        | Some times | 
          | 
          | 
          | 
          | 
        1.43 (0.95-2.16) | 
        1.13 (0.72-1.78) |