Table 3 Comparability among groups regarding severity of the initial anteroposterior relationship of dental arches (Chi-square test)
From: Treatment effects of the Jasper Jumper and the Bionator associated with fixed appliances
Severity of class II | G1 Jasper (n = 25) | G2 Bionator (n = 30) | G3 Control (n = 22) | P |
|---|---|---|---|---|
¼ Class II | 0 | 0 | 4 (18%) | 0.0028 χ 2 = 19.9793 |
½ Class II | 4 (16%) | 9 (30%) | 11 (50%) | |
¾ Class II | 9 (36%) | 9 (30%) | 4 (18%) | |
Complete class II | 12 (48%) | 12 (40%) | 3 (14%) |