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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