Table 1.
Participant Characteristics at Baseline
| Characteristic | All Participants n = 149 | ESS ≥ 11 n = 106 | MSLT < 7.5 min n = 85 | FOSQ Total Score <17.9 n = 120 |
|---|---|---|---|---|
| Men, % | 87.3 | 85.6 | 84.7 | 87.5 |
| Age, y | 46.8 (8.8) | 46.1 (8.4) | 44.4 (8.6) | 46.2 (8.6) |
| BMI, kg/m2 | 38.0 (8.1) | 38.5 (8.4) | 40.0 (8.5) | 38.1 (8.5) |
| AHI, no./h | 64.1 (29.1) | 67.6 (27.9) | 69.2 (29.9) | 65.4 (29.6) |
| SaO2 nadir during | ||||
| NREM | 73.5 (17.4) | 73.2 (17.5) | 71.3 (16.9) | 72.8 (14.7) |
| REM | 66.9 (18.5) | 66.8 (18.8) | 64.2 (18.3) | 68.3 (18.0) |
| MSLT, min | 7.2 (5.1) | 6.5 (4.8) | 3.7 (1.9) | 6.9 (5.1) |
| ESS, score | 14.7 (4.8) | 16.7 (3.3) | 15.7 (4.3) | 16.0 (4.2) |
| FOSQ, Total score | 14.7 (3.1) | 14.0 (2.7) | 14.2 (2.9) | 13.8 (2.6) |
| PSQI, Global score | 8.4 (3.7) | 8.9 (3.4) | 8.8 (3.6) | 9.0 (3.7) |
| Nightly CPAP duration, h | 4.7 ( 2.1) | 4.7 (2.2) | 4.3 (2.2) | 4.6 (2.2) |
| Subjects who used CPAP for given number of hours per night, % | ||||
| ≥ 6 | 45.1 (31.5) | 44.6 (32) | 38.8 (30.9) | 43.5 (30.9) |
| ≥ 5 | 57.8 (32.1) | 57.1 (33.1) | 51.8 (32.8) | 56.1 (32) |
| ≥ 4 | 66.1 (31.2) | 65.1 (32.2) | 60.7 (32.9) | 64.4 (31.4) |
| ≥ 3 | 71.6 (29.6) | 70.5 (30.6) | 63.9 (31.5) | 70 (30.1) |
| Any use | 79.5 (25.9) | 78.6 (26.9) | 76.5 (27.9) | 77.8 (26.6) |
Data are presented as mean ± SD unless otherwise indicated. ESS, refers to Epworth Sleepiness Scale; MSLT, Multiple Sleep Latency Test; FOSQ, Functional Outcomes of Sleep Questionnaire; BMI, body mass index; AHI, apnea-hypopnea index; REM, rapid eye movement; NREM, non-rapid eye movement; PSQI; Pittsburgh Sleep Quality Index; CPAP continuous positive airway pressure;