Obese with OSAS group

Non-obese with OSAS group

p-value

N

148

46

NS

Age (year)

56.7 ± 1.0

62.8 ± 1.6

NS

BMI (kg/m²)

29.2 ± 4.2

22.5 ± 1.3

<0.0001

ESS

12.7 ± 0.3

11.5 ± 1.8

NS

TST(min)

333.5 ± 13.5

317.0 ± 14.7

NS

%Stage N1 (%)

45.5 ± 2.9

36.7 ± 3.1

<0.05

%Stage N2 (%)

38.5 ± 2.5

45.7 ± 2.8

NS

%Stage N3 (%)

1.0 ± 0.3

0.9 ± 0.5

NS

%Stage R (%)

14.7 ± 1.1

16.4 ± 1.2

NS

AHI (events/hr)

51.5 ± 2.7

37.7 ± 2.4

<0.0001

Arousal index (events/hr)

44.5 ± 3.1

31.8 ± 15.8

<0.005