Comparison Mean difference Q P values
Group 1: 3 Vs 4-5 35.0 12.267 <0.001
Group 2: 3 Vs >5 39.10 13.704 <0.001
Group 3: 4-5 Vs >5 4.10 1.437 >0.05
Table 6: Tukey-Kramer multiple comparisons test for severe dysplasia.