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Table 3 Descriptive statistics and statistical comparisons (independent-samples t tests) of the starting forms (cephalometric values at T1)

From: Dentoskeletal effects of early class III treatment protocol based on timing of intervention in children

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
  1. The bold indicates the statistical significance
  2. *P < 0.05; SD standard deviations; Diff. difference; CI confidence interval; Pal. palatal; Pl. plane; Mand. mandibular; Occl. occlusal