Skip to main content

Table 6 Descriptive statistics of the changes observed between T2 and T1 and the p-values of the statistical tests

From: Three-dimensional oropharyngeal airway changes after facemask therapy using low-dose computed tomography: a clinical trial with a retrospectively collected control group

Variable Control group
(N = 16)
Facemask group (N = 18) Mean difference p-value 95% CI
Mean SD Mean SD Lower Upper
Total Oropharyngeal airway volume (mm3) 302.23 345.58 738.86 1109.37 −436.63 0.128 −1009.94 136.68
Retropalatal airway volume (mm3) 145.73 189.22 388.63 491.44 −242.90 0.065 −242.90 125.12
Retroglossal airway volume (mm3) 156.50 326.96 350.22 1040.18 −193.72 0.462 −193.72 258.44
Minimal cross sectional area (mm2) 1.66 34.20 −0.48 21.32 2.14 0.826 −17.53 21.81
Point-based analysis
Mean part analysis (mm) 0.25 0.30 0.58 0.61 −0.33 0.54 −0.67 0.01
Minimum part analysis (mm) −2.38 1.13 −2.94 1.29 0.56 0.192 −0.30 1.41
Maximum part analysis (mm) 3.14 1.51 4.80 1.80 −1.67 0.007** −2.82 −0.51
  1. 95% CI 95% Confidence interval of the difference
  2. **p < 0.01