Table 1.
Sample characteristics by all-cause and cardiovascular mortality in MrOS
| Alive (N = 1473) | All-cause mortality (N = 1270) | CVD mortality (N = 440) | |
|---|---|---|---|
| Age (years), mean (SD) | 74.3 (4.5) | 78.8 (5.5) | 79.2 (5.5) |
| BMI (kg/m2) | 27.2 (3.6) | 27.1 (4.1) | 27.3 (3.9) |
| Race, n (%) | |||
| Caucasian | 1312 (89.1) | 1177 (92.7) | 411 (93.4) |
| African American | 54 (3.7) | 38 (3.0) | 8 (1.8) |
| Other race | 107 (7.3) | 55 (4.3) | 21 (4.8) |
| Alcohol, n (%) | |||
| <1 glasses/week | 660 (44.8) | 608 (47.9) | 218 (49.5) |
| 1–13 glasses/week | 725 (49.2) | 601 (47.3) | 202 (45.9) |
| 14+ glasses/week | 88 (6.0) | 61 (4.8) | 20 (4.6) |
| Congestive heart failure, n (%) | 49 (3.3) | 111 (8.7) | 58 (13.2) |
| Cardiovascular disease (including congestive heart failure), n (%) | 459 (31.2) | 636 (50.1) | 260 (59.1) |
| Hypertension, n (%) | 658 (44.7) | 703 (55.4) | 272 (61.8) |
| Stroke, n (%) | 34 (2.3) | 68 (5.4) | 27 (6.1) |
| Diabetes, n (%) | 159 (10.8) | 196 (15.4) | 84 (19.1) |
| Renal failure, n (%) | 5 (0.3) | 21 (1.7) | 7 (1.6) |
| Chronic obstructive pulmonary disease, n (%) | 60 (4.1) | 82 (6.5) | 19 (4.3) |
| Smoking status, n (%) | |||
| Never | 613 (41.6) | 484 (38.1) | 164 (37.3) |
| Former | 836 (56.8) | 758 (59.7) | 271 (61.6) |
| Current | 24 (1.6) | 28 (2.2) | 5 (1.1) |
| Statin use, n (%) | 631 (42.8) | 499 (39.3) | 196 (44.5) |
| Total sleep time (TST), n (%) | |||
| >5–8 h | 1221 (82.9) | 970 (76.4) | 336 (76.4) |
| ≤5 h | 224 (15.2) | 257 (20.2) | 92 (20.9) |
| >8 h | 28 (1.9) | 43 (3.4) | 12 (2.7) |
| Apnoea–hypopnoea index (events/h) | 15.7 (13.9) | 17.8 (14.8) | 18.9 (15.1) |
| TST90 (%TST) | 3.23 (7.76) | 5.11 (10.9) | 5.36 (10.4) |
| Hypoxic burden (%min/h) | 53.3 (47.8) | 64.3 (57.7) | 72.7 (61.5) |
| Q1 (≤20 %min/h), n (%) | 324 (22.0) | 225 (17.7) | 64 (14.5) |
| Q2 (20–34 %min/h), n (%) | 304 (20.6) | 248 (19.5) | 77 (17.5) |
| Q3 (34–53 %min/h), n (%) | 324 (22.0) | 224 (17.6) | 71 (16.1) |
| Q4 (53–88 %min/h), n (%) | 283 (19.2) | 270 (21.3) | 100 (22.7) |
| Q5 (>88 %min/h), n (%) | 238 (16.2) | 303 (23.9) | 128 (29.1) |