Comparison of baseline characteristics and Holter analysis for patients grouped according to frequency of dips in Sao 2 ⩾4%
| Dips < 15/h (n = 81) | Dips ⩾ 15/h (n = 23) | p value | |
|---|---|---|---|
| Age | 64 (1.2) | 66.6 (1.6) | NS |
| Body mass index (m2/kg) | 26.6 (0.4) | 26.2 (0.6) | NS |
| Ejection fraction | 0.48 (0.02) | 0.31 (0.03) | < 0.005 |
| Alcohol (units/week) | 7.8 (1.1) | 5 (2.3) | NS |
| NYHA class | 2.3 (0.1) | 3 (0.2) | < 0.005 |
| Epworth sleepiness scale | 7.7 (0.4) | 7.1 (0.9) | NS |
| Extrasystoles (per hour) | 78 (22) | 220 (76) | 0.05 |