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Table 5 Descriptive statistics and statistical comparisons (independent-samples t tests) of the T2-T1 changes

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 Median SD IQR Mean Median SD IQR Lower Upper
SNA (°) 1.5 1.5 0.8 1.6 0.6 0.166  − 0.3 1.7
SNB (°)  − 0.3 2.0 0.1 2.0  − 0.2 0.295   
ANB (°) 1.8 1.2 1.1 2.1 0.7 0.129  − 0.2 1.8
Wits (mm) 3.0 2.2 2.0 2.7 1.0 0.159  − 0.4 2.6
Co-Gn (mm) 3.7 1.9 3.4 1.7 0.2 0.687  − 0.9 1.4
SN-Pal. Pl. (°)  − 0.2 1.7  − 0.6 1.5 0.3 0.436  − 0.6 1.4
SN-GoMe (°)  − 0.4 2.0  − 0.8 2.9 0.4 0.941   
Pal. Pl.-Mand.Pl (°) 0.0 2.3 0.8 2.0  − 0.8 0.266  − 2.1 0.6
ArGoMe (°)  − 1.1 1.2  − 1.2 1.5 0.1 0.868  − 0.8 0.9
Pal. Pl.-Occl. Pl. (°)  − 0.1 2.8  − 0.5 2.1 0.4 0.593  − 1.2 2.0
Occl. Pl.-Mand. Pl. (°) 0.1 2.6 1.3 2.3  − 1.2 0.124  − 2.8 0.3
I^SN (°) 2.4 8.0  − 0.6 5.6 3.0 0.185  − 1.5 7.4
I^Pal. Pl. (°)  − 2.2 8.7 1.5 3.8  − 3.7 0.096  − 8.1 0.7
IMPA (°)  − 3.0 5.1  − 3.8 4.6 0.8 0.600  − 2.3 3.9
  1. Italics indicates the value for the Median and for the Interquartile Range (IQR)
  2. SD standard deviations; IQR Interquartile range; Diff. difference; CI confidence interval; Pal. palatal; Pl. plane; Mand. mandibular; Occl. occlusal