| Subtherapeutic CPAP (n = 51) | Therapeutic CPAP (n = 51) | |
| Age (years) | 48.7 (10.6) | 48.1 (9.5) |
| Weight (kg) | 111.3 (22.0) | 115.5 (25.1) |
| BMI (kg/m2) | 34.5 (5.0) | 35.8 (7.3) |
| Neck circumference (cm) | 44.6 (3.3) | 45.1 (4.0) |
| Waist/hip circumference ratio | 1.01 (0.06) | 1.02 (0.06) |
| Current smokers (%) | 17.7 | 21.6 |
| Ex-smokers (%) | 54.9 | 43.2 |
| Hypertensive (%) | 25.5 | 21.6 |
| Diabetics (%) | 2.0 | 2.0 |
| Cardiovascular risk score (%) | 1.75 (1.71) | 1.62 (1.82) |
| Oxygen saturation dips >4% (per hour of sleep) | 42.7 (21.6) | 41.9 (25.4) |
| ESS at baseline | 15.2 (4.0) | 15.8 (4.0) |
| Osler at baseline (min) | 17.3 (13.1) | 18.1 (13.1) |
| CPAP compliance (h/night) | 3.9 (2.5) | 4.7 (2.1) |
| Re-titration CPAP pressure following study (cm H2O) | 10.1 (1.6) | 10.0 (1.9) |
Values are mean (SD).
Cardiovascular risk score estimates the risk of death (%) in the next 5 years due to a cardiovascular event.
None of the differences was statistically significant.
BMI, body mass index; CPAP, continuous positive airway pressure; ESS, Epworth Sleepiness Score.