Baseline patient characteristics
| Therapeutic CPAP (n=13) | CPAP- withdrawal (n=13) | |
|---|---|---|
| Age, mean (SD), years | 65.3±7.7 | 67.6±6.5 |
| Male sex, n (%) | 11 (85) | 9 (69) |
| BMI, mean (SD), kg/m2 | 32.8±5.4 | 34.4±6.2 |
| Neck circumference, mean (SD), cm | 44.2±3.4 | 40.2±3.4 |
| Active smoker, n (%) | 1 (8) | 1 (8) |
| Former smoker, n (%) | 3 (23) | 8 (62) |
| Antihypertensive drugs, n (%) | 5 (38) | 9 (69) |
| Statins, n (%) | 7 (54) | 4 (31) |
| AHI at diagnosis, mean (SD), events per hour | 55.3±22.6 | 45.8±16.4 |
| ODI at diagnosis, mean (SD), events per hour | 53.0±20.8 | 42.6±17.4 |
| ESS at diagnosis, mean (SD), points | 13.0±2.9 | 12.3±4.8 |
| AHI on CPAP, mean (SD), events per hour | 4.1±3.0 | 2.1±1.5 |
| ESS on CPAP, mean (SD), points | 5.1±2.2 | 6.5±2.5 |
| CPAP compliance, mean (SD), hh:mm | 06:50 | 07:08 |
| FEV1/FVC, mean (SD) | 0.80 (0.04) | 0.78 (0.02) |
| FVC, mean (SD), % predicted | 90 (9) | 95 (16) |
| FEV1, mean (SD), % predicted | 89 (13) | 95 (16) |
AHI, apnoea–hypopnoea-index; BMI, body mass index; ESS, Epworth Sleepiness Scale; ODI, oxygen desaturation-index.