Table 1 Baseline characteristics of study cohorts (Mean ± SD)
From: Weighted Epworth sleepiness scale predicted the apnea-hypopnea index better
Characteristic | Derivation cohort (n = 756) | Validation cohort (n = 810) | t or x2 value | p value |
|---|---|---|---|---|
Age (yrs) | 43.5 ± 13.0 | 39.6 ± 12.5 | 5.579 | < 0.001 |
Male sex (No.) (%) | 652 (86.2) | 674 (83.2) | 2.700 | 0.100 |
BMI | 26.3 ± 4.2 | 26.4 ± 4.8 | 0.679 | 0.497 |
NC (cm) | 37.9 ± 3.0 | 37.8 ± 3.4 | 0.635 | 0.526 |
AHI | 26.4 ± 20.0 | 33.8 ± 21.0 | ||
AHI ≥ 5 (No.) (%) | 640 (84.7) | 722 (89.1) | 6.926 | 0.008 |
AHI > 15 (No.) (%) | 490 (64.8) | 670 (82.7) | 65.250 | < 0.001 |
AHI > 30 (No.) (%) | 290 (38.4) | 414 (51.1) | 25.694 | < 0.001 |
LOS | 79.3 ± 10.1 | 77.4 ± 9.5 | 3.926 | < 0.001 |