| Sl no | Statement |  | School level | Total | Test statistics | 
      
        |  | Middle school
 | High school
 | CC | P Value | 
      
        | 1 | Are you aware of a    dentist? | F | 4932 | 4116 | 9048 | .008 | .458 | 
      
        | % | 95.3% | 95.0% | 95.2% | 
      
        | 2 | Have you visited a dentist    before? | F | 2332 | 1862 | 4194 | .021 | .040 | 
      
        | % | 45.1% | 43.0% | 44.1% | 
      
        | 3 | Have you heard of an    Orthodontist? | F | 2070 | 1697 | 3767 | .009 | .403 | 
      
        | % | 40.0% | 39.2% | 39.6% | 
      
        | 4 | Are you aware that they    align your teeth? | F | 2353 | 2040 | 4393 | .016 | .118 | 
      
        | % | 45.5% | 47.1% | 46.2% | 
      
        | 5 | Have you noticed people    having irregular teeth? | F | 3728 | 3271 | 6999 | .039 | .000 | 
      
        | % | 72.1% | 75.5% | 73.6% | 
      
        | 6 | Do you    believe teeth should be properly aligned for a better facial appearance? | F | 3612 | 3351 | 6963 | .084 | .000 | 
      
        | % | 69.8% | 77.4% | 73.3% | 
      
        | 7 | Do you know crooked teeth    have ill effects? | F | 3029 | 2545 | 5574 | .002 | .848 | 
      
        | % | 58.6% | 58.7% | 58.6% | 
      
        | 8 | Have you seen people    wearing braces? | F | 3828 | 3430 | 7258 | .061 | .000 | 
      
        | % | 74.0% | 79.2% | 76.4% | 
      
        | 9 | Have you ever felt the    need to wear braces? | F | 2338 | 1839 | 4177 | .028 | .007 | 
      
        | % | 45.2% | 42.5% | 43.9% | 
      
        | 10 | Has anyone advised you to    get your teeth aligned? | F | 2372 | 1745 | 4117 | .056 | .000 | 
      
        | % | 45.9% | 40.3% | 43.3% | 
      
        | 11 | Are you aware that few    teeth may have to be removed for aligning    irregular teeth?
 | F | 2717 | 2336 | 5053 | .014 | .173 | 
      
        | % | 52.5% | 53.9% | 53.2% | 
      
        | 12 | Does thumb-sucking has an    effect on the front teeth alignment?
 | F | 2825 | 2225 | 5050 | .032 | .002 | 
      
        | % | 54.6% | 51.4% | 53.1% | 
      
        | 13 | Did you know taking braces    treatment at the earlier age would improve    facial appearance?
 | F | 2059 | 1793 | 3852 | .016 | .117 | 
      
        | % | 39.8% | 41.4% | 40.5% | 
      
        | 14 | Do you know the duration    for braces treatment is longer than other dental    procedures?
 | F | 1942 | 1754 | 3696 | .030 | .003 | 
      
        | % | 37.5% | 40.5% | 38.9% | 
      
        | 15 | Do you    know the orthodontic treatment is costly? | F | 2117 | 1879 | 3996 | .025 | .016 | 
      
        | % | 40.9% | 43.4% | 42.0% |