Table 3.
Intergroup Comparisons of the Starting Forms (t-Test and Mann-Whitney U-Test)
| Variable |
Group HH, Mean (SD) |
Group CH, Mean (SD) |
95% CI, Lower, Upper |
P Value* |
| Transversal distances (mm) | ||||
| Nasal cavity width | 28.81 (2.35) | 28.33 (2.18) | −1.18, 2.14 | .561 |
| Palatal root distance width | 34.56 (2.86) | 31.65 (3.31) | 0.64, 5.18 | .021*a |
| Maxillary width | 64.64 (3.47) | 62.59 (4.85) | −0.96, 5.05 | .175 |
| Palatal alveolar crest width | 36.32 (2.66) | 33.94 (3.97) | −0.06, 4.83 | .056 |
| Buccal alveolar crest width | 59.94 (3.40) | 57.08 (3.86) | 0.19, 5.52 | .036* |
| Arch width | 57.02 (3.12) | 54.69 (4.32) | −0.41, 5.07 | .093 |
| Premolar inclination | 162.66 (13.61) | 156.73 (9.63) | −4.38, 16.24 | .245 |
| Molar inclination | 158.26 (11.52) | 153.66 (7.03) | −2.61, 11.80 | .203 |
| Dental model analysis (mm) | ||||
| 6-6 width | 55.35 (3.27) | 52.59 (4.77) | −0.31, 5.82 | .077 |
| 5-5 width | 50.47 (2.95) | 47.57 (5.12) | −0.25, 6.05 | .070 |
| 4-4 width | 45.61 (2.72) | 42.63 (3.86) | 0.36, 5.58 | .027* |
| 3-3 width | 36.83 (2.66) | 34.78 (3.00) | −0.99, 5.08 | .170 |
| Arch length | 29.09 (3.00) | 27.66 (2.80) | −0.80, 3.66 | .201 |
| Arch perimeter | 77.64 (5.03) | 75.02 (5.52) | −1.75, 7.00 | .228 |
| Arch size | ||||
| Maxillary arch size | 91.96 (5.54) | 91.09 (5.86) | −4.00, 5.74 | .716 |
a
P values for Mann-Whitney U-test.
*
Statistically significant at P < .05, t-test.