Table 4 Intergroup differences in pharyngeal airway changes (∆T) by airway section (sections 1–6).

From: Evaluation of pharyngeal airway space after orthodontic extraction treatment in class II malocclusion integrating with the subjective sleep quality assessment

Variables

Normodivergent nonextraction (n = 30)

Normodivergent extraction (n = 23)

Hyperdivergent extraction (n = 26)

p-value

Chi-square

Total (n = 79)

Cases with airway reduction (%)

T1–T0

Count of airway reduction

T1–T0

Count of airway reduction

T1–T0

Count of airway reduction

Mean

SD

Mean

SD

Mean

SD

Airway1

−0.17

1.63

15

0.32

1.05

10

0.14

0.82

10

NS

NS

0.07

35 (44.30%)

Airway2

0.44

1.54

13

0.53

1.46

8

0.15

1.44

12

NS

NS

0.37

33 (41.77%)

Airway3

−0.34

1.58

15

−0.16

1.38

12

−0.72

1.91

15

NS

NS

−0.41

42 (53.16%)

Airway4

−0.11

1.67

15

−0.43

1.94

14

−0.60

2.11

16

NS

NS

−0.36

45 (56.96%)

Airway5

−0.06

2.01

15

−0.84

2.40

14

−0.52

2.27

17

NS

NS

−0.44

46 (58.23%)

Airway6

0.50

1.46

13

−0.14

2.03

12

0.35

2.02

12

NS

NS

0.27

37 (46.83%)

  1. One-way ANOVA was performed for intergroup differences in airway changes (∆T).
  2. Chi-square test were performed for intergroup differences in count of airway reduction.
  3. NS not significant.
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