Table 3 Descriptive statistics and statistical comparisons (independent-samples t tests) of the starting forms (cephalometric values at T1)
Variables | Prepubertal | Pubertal | Diff | P value | 95% CI of the difference | |||
|---|---|---|---|---|---|---|---|---|
Mean | SD | Mean | SD | Lower | Upper | |||
SNA (°) | 78.8 | 3.5 | 79.7 | 3.9 | − 0.9 | 0.404 | − 3.2 | 1.3 |
SNB (°) | 79.0 | 3.6 | 79.4 | 3.2 | − 0.4 | 0.762 | − 2.6 | 1.8 |
ANB (°) | − 0.3 | 2.4 | 0.4 | 2.4 | − 0.7 | 0.402 | − 2.1 | 0.9 |
Wits (mm) | − 4.7 | 2.9 | − 4.5 | 3.2 | − 0.2 | 0.873 | − 2.0 | 1.7 |
Co-Gn (mm) | 98.3 | 5.1 | 103.3 | 5.9 | − 5.0 | 0.005* | − 8.5 | − 1.7 |
SN-Pal. Pl. (°) | 7.8 | 2.8 | 9.1 | 4.0 | − 1.3 | 0.220 | − 3.4 | 0.8 |
SN-GoMe (°) | 35.6 | 6.4 | 36.9 | 4.9 | − 1.3 | 0.493 | − 4.9 | 2.4 |
Pal. Pl.-Mand.Pl (°) | 27.8 | 5.3 | 27.8 | 4.7 | 0.0 | 0.983 | − 3.1 | 3.2 |
ArGoMe (°) | 131.4 | 5.9 | 132.5 | 5.5 | − 1.1 | 0.537 | − 4.7 | 2.5 |
Pal. Pl.-Occl. Pl. (°) | 9.3 | 3.3 | 8.5 | 3.0 | 0.8 | 0.408 | − 1.2 | 2.8 |
Occl. Pl.-Mand. Pl. (°) | 18.6 | 4.8 | 19.4 | 3.2 | − 0.8 | 0.561 | − 3.4 | 1.9 |
I^SN (°) | 105.6 | 9.6 | 106.3 | 6.3 | − 0.7 | 0.775 | − 6.0 | 4.5 |
I^Pal. Pl. (°) | 66.8 | 9.8 | 65.2 | 6.1 | 1.6 | 0.554 | − 3.7 | 6.8 |
IMPA (°) | 86.7 | 8.8 | 86.1 | 7.5 | 0.6 | 0.834 | − 4.6 | 5.7 |