Table 1.
Description of Sample (n = 1522) by Sleep-Disordered Breathing Category
| Baseline characteristics | Total n = 1522 |
Apnea Hypopnea Index Category |
|||
|---|---|---|---|---|---|
| None < 5 n = 1157 |
Mild 5 – < 15 n = 220 |
Moderate 15 – < 30 n = 82 |
Severe ≥ 30 (range, 30–97) n = 63 |
||
| Continuous variables, mean (SD) | |||||
| Age, y | 48 (8) | 47 (8) | 50 (8) | 50 (8) | 50 (9) |
| Body mass index, median kg/m2 | 28.6 | 27.6 | 31.5 | 33.3 | 37.2 |
| Alcoholic drinks/week | 2 (6) | 2 (6) | 2 (6) | 2 (4) | 3 (9) |
| Binary variables, n (%) | |||||
| Current smoker | 274 (18) | 214 (19) | 36 (16) | 12 (15) | 12 (19) |
| Sex, male | 839 (55) | 589 (51) | 142 (65) | 59 (72) | 49 (78) |
| Cardiovascular disease* | 54 (4) | 30 (3) | 11 (5) | 8 (10) | 5 (8) |
| Hypertension* | 495 (33) | 312 (27) | 95 (43) | 46 (56) | 42 (69) |
| Diabetes* | 50 (3) | 27 (2) | 11 (5) | 5 (6) | 7 (11) |
| Stroke* | 8 (0.5) | 4 (0.4) | 0 (0) | 0 (0) | 4 (6) |
| Excessive daytime sleepiness | 371 (25) | 266 (23) | 54 (25) | 81 (35) | 23 (37) |
| Education beyond high school | 1124 (74) | 876 (76) | 149 (69) | 57 (70) | 42 (68) |
| Very good or excellent health** | 1001 (69) | 808 (74) | 130 (61) | 37 (48) | 26 (43) |
| Deaths | |||||
| Cause-specific, n (% of total deaths in AHI category) | |||||
| Cardiovascular disease and Stroke | 25 (31) | 12 (26) | 6 (38) | 2 (33) | 5 (42) |
| Cancer | 37 (46) | 22 (48) | 6 (38) | 4 (67) | 5 (42) |
| Injury, suicide | 7 (9) | 4 (9) | 2 (12.5) | 0 (0) | 1 (8) |
| Other | 6 (8) | 4 (9) | 2 (12.5) | 0 (0) | 0 (0) |
| Unknown | 5 (6) | 4 (9) | 0 (0) | 0 (0) | 1 (8) |
| Total deaths, n (%) | 80 (100) | 46 (100) | 16 (100) | 6 (100) | 12 (100) |
*
physician-diagnosed condition, self reported at baseline protocol
**
Self-rated health evaluation