| OSAS with EDS (n = 22) | OSAS without EDS (n = 22) | Healthy subjects (n = 23) | p Value (a, b, c) | |
| Age (y) | 49 (6) (46 to 52) | 50 (5) (46 to 52) | 48 (6) (45 to 50) | 0.535, 0.142, 0.061 |
| BMI (kg/m2) | 32 (3) (30 to 34) | 31 (4) (28 to 34) | 25 (3) (24 to 27) | 0.000, 0.230, 0.000 |
| Hypertension (%) | 55 | 65 | 0 | |
| SBP (mm Hg) | 139 (13) (135 to 146) | 147 (22) (137 to 157) | 128 (9) (124 to 132) | 0.010, 0.115, 0.001 |
| DBP (mm Hg) | 92 (10) (88 to 96) | 93 (11) (89 to 97) | 78 (8) (75 to 82) | 0.000, 0.622, 0.000 |
| Current smoker (%) | 48 | 40 | 0 | |
| AHI (/h) | 52 (19) (44 to 60) | 48 (16) (40 to 56) | 3 (1) (1 to 4) | 0.000, 0.396, 0.000 |
| Mean Sao2 (%) | 86 (6) (84 to 89) | 90 (5) (87 to 94) | 93 (2) (92 to 95) | 0.000, 0.040,0.040 |
| Minimal Sao2 (%) | 69 (12) (64 to 75) | 81 (8) (75 to 86) | NA | 0.010 |
| ESS | 16 (3) (15 to 18) | 4 (3) (3 to 7) | 3 (2) (1 to 5) | 0.000, 0.000, 0.06 |
| MSLT (min) | 5 (3) (3 to 7) | 15 (3) (13 to 17) | NA | 0.000 |
| Arousal index | 65 (19) (55 to 73) | 62 (25) (56 to 71) | NA | 0.732 |
Results are presented as mean (SD) (95% confidence interval for the mean).
p values: a = OSAS with EDS vs controls; b = OSAS with EDS vs OSAS without EDS; c = OSAS without EDS vs controls.
AHI, apnoea–hypopnoea index; BMI, body mass index; DBP diastolic pressure; EDS, excessive daytime sleepiness; ESS, Epworth Sleepiness Scale; MSLT, multiple sleep latency time; NA, not available; OSAS, obstructive sleep apnoea syndrome; Sao2, arterial oxygen saturation; SBP, systolic blood pressure.