| 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 |