Table 1.
Subject characteristics
| All (n = 200) Mean (SD) | Males (n = 136) Mean (SD) | Females (n = 64) Mean (SD) | Mean Difference (95% CI) | |
|---|---|---|---|---|
| Age (y) | 49.4 (14.5) | 49.3 (14.5) | 49.8 (14.7) | −0.5 (−4.9 to 3.8) |
| BMI (kg/m2) | 30.5 (6.7) | 30.5 (6.2) | 30.4 (7.8) | 0.08 (−1.9 to 2.1) |
| TST (h) | 5.8 (1.1) | 5.8 (1.0) | 5.8 (1.2) | 0.07 (−0.3 to 0.4) |
| PSG AHI (events/h) | 21.4 (25.0) | 24.5 (27.2) | 14.7 (19.0) | 9.8 (3.3 to 16.3) |
| ESS | 9.9 (5) | 10.2 (4.7) | 9.2 (5.7) | 1 (−0.4 to 2.6) |
| NF analysis duration (h) | 7.6 (0.9) | 7.6 (0.9) | 7.6(0.8) | −0.03 (−0.3 to 0.2) |
| NF quality duration (h) | 6.3 (1.5) | 6.4 (1.4) | 6.2 (1.6) | 0.2 (−0.3 to 0.6) |
| PSG AHI minus NF RDI (events/h) | −6.2 (8.5) | −6.0 (8.8) | −6.8 (7.7) | 0.8 (−1.9 to 2.8) |
BMI refers to body mass index; TST, total sleep time; PSG AHI, polysomnography derived apneas hypopnea index; ESS, Epworth Sleepiness Scale; NF, nasal flow; RDI, respiratory disturbance index.