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Table 2 Comparison of the AC and the DHC overall grades

From: Orthodontic treatment needs in the western region of Saudi Arabia: a research report

Group/Grade AC DHC Chi-Square P-value
  % N % N   
No/Slight Need 60.6 450 15.2 113 201.007 0.000*
Moderate need 23.3 173 13.2 98 20.756 0.000*
Need TX 16.1 119 71.6 532 262.011 0.000*
Total   742   743   
  1. * Significant at p < 0.001 at 1 d.f.