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Table 5 Descriptive statistics of the CT-based measurements and the p-values of significance testing between the two groups

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)
T1 T2 T2 vs. T1
p-value
95% CI T1 T2 T2 vs. T1
p-value
95% CI
Mean SD Mean SD Lower Upper Mean SD Mean SD Lower Upper
Total Oropharyngeal airway volume (mm3) 7563.34 2012.41 7865.57 2110.22 0.003** 118.08 486.37 8308.13 2533.60 9046.98 2740.48 0.012* 187.18 1290.53
Retropalatal airway volume (mm3) 4308.51 1273.48 4454.24 1314.12 0.008** 44.90 246.56 4767.68 1349.69 5156.31 1282.47 0.004** 144.25 633.02
Retroglossal airway volume (mm3) 3254.83 930.24 3411.33 239.84 0.075 −17.73 330.72 3540.45 1360.66 3890.67 1713.96 0.171 −167.05 867.49
Minimal cross sectional area (mm2) 163.08 43.53 164.74 37.71 0.849 −16.56 19.88 149.57 27.95 149.09 34.73 0.925 −11.08 10.12
  1. 95% CI confidence interval of the difference
  2. *p < 0.05; **p < 0.01