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Table 2 Comparison of time periods of 3 groups during orthodontic treatment at 3 stages (months)

From: Assessing changes in quality of life using the Oral Health Impact Profile (OHIP) in patients with different classifications of malocclusion during comprehensive orthodontic treatment

Clinical stage

Class I group

Class II group

Class III group

P*

Mean(SD)

Mean(SD)

Mean(SD)

T0-T1

7.11(1.71)

8.13(0.25)

7(1.05)

P > 0.05 (NS)

T1-T2

9.05(1.2)

9.11(0.95)

8.04(1.35)

P > 0.05 (NS)

T2-T3

5.22(0.58)

5.43(0.77)

5.31(1.27)

P > 0.05 (NS)

  1. Friedman 2-way ANOVA; P*>: level of significance;NS: not significant.