Demographic data of CPAP treated patients and controls
| CPAP treated group | Controls | p value | |
|---|---|---|---|
| CPAP = continuous positive airway pressure; BMI = body mass index; RDI = respiratory disturbance index. | |||
| Data are expressed as mean (SD) except *which are expressed as median (IQR) and †expressed as percentage. | |||
| Significance tested by t tests except ‡where significance was tested by the Mann-Whitney test and §by χ2 test. | |||
| Age (years) | 49.9 (10) | 51.7 (12.2) | 0.429 (NS) |
| Sex (% male)† | 94% | 94% | 1.0 (NS)§ |
| BMI (kg/m2) | 39 (7.7) | 36.6 (5.3) | 0.285 (NS) |
| Neck circumference (cm) | 47.3 (3.9) | 45 (5.3) | 0.147 (NS) |
| RDI (events/h) | 59.8 (16.9) | 58.3 (15.7) | 0.791 (NS) |
| RDI on CPAP (events/h) | 11.1 (10) | N/A | N/A |
| Epworth score* | 15.5 (12.75–19) | 16 (14.75–19.25) | 0.662 (NS)‡ |