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Table 2 Comparison of the aerodynamic parameters between the two groups defined by the AN ratio 0.6

From: Aerodynamic characteristics in upper airways among orthodontic patients and its association with adenoid nasopharyngeal ratios in lateral cephalograms

 

Group 1 (n = 25)

 

Group 2 (n = 10)

Group 1 versus Group 2

 
 

Mean

SD

Mean

SD

p value

Inspiration

     

ΔP

 − 4.38

2.15

 − 4.65

2.18

0.373a

Maximum Vms

2.36

0.46

3.04

0.80

0.013a

Maximum Pws

2.50

5.14

0.93

0.54

0.190b

Minimum Pw

 − 11.18

5.09

 − 13.14

6.97

0.115b

Expiration

     

ΔP

3.59

2.87

3.60

2.15

0.494a

Maximum Vms

2.22

0.94

2.92

1.20

0.045b

Maximum Pws

1.64

1.82

1.13

0.84

0.440b

Minimum Pw

 − 11.67

4.97

 − 13.67

5.87

0.157a

  1. Group 1 consisted of the cases with AN ratio less than the 0.6 whereas Group 2 consisted of the cases with AN ratio equal or more than 0.6
  2. aIndependent samples T test (one-tailed)
  3. bMann–Whitney U test (one-tailed)