Table 1 Baseline demographic and health characteristics (complete case analysis).
Characteristic | No. (%) | |||
|---|---|---|---|---|
High MI (> 0.08), n = 646 | Intermediate MI (−0.19 to 0.08), n = 1350 | Low MI (≤ −0.19), n = 678 | All participants, n = 2674 | |
Age, mean (SD), years | 76.1 (5.5) | 75.9 (5.3) | 77.3 (5.6) | 76.3 (5.5) |
Race | ||||
White | 584 (90.4) | 1242 (92.0) | 616 (90.9) | 2442 (91.3) |
Other | 62 (9.6) | 108 (8.0) | 62 (9.1) | 232 (8.7) |
Education | ||||
≤ High school degree | 165 (25.5) | 261 (19.3) | 141 (20.8) | 567 (21.2) |
≥ Some college | 481 (74.5) | 1089 (80.7) | 537 (79.2) | 2107 (78.8) |
Body mass index | 27.3 (3.8) | 27.1 (3.7) | 27.2 (4.0) | 27.2 (3.8) |
Smoking status | ||||
Never | 259 (40.1) | 540 (40.0) | 255 (37.7) | 1054 (39.4) |
Past | 372 (57.6) | 785 (58.1) | 409 (60.4) | 1566 (58.6) |
Current | 15 (2.3) | 25 (1.9) | 13 (1.9) | 53 (2.0) |
Daily caffeine intake, mean (SD), mg/dl | 235.2 (243.1) | 230.2 (240.4) | 248.4 (262.4) | 236.0 (246.8) |
Alcohol use | ||||
No alcohol (non-drinker) | 234 (36.3) | 459 (34.2) | 221 (32.8) | 914 (34.3) |
Less than one drink per week | 91 (14.1) | 167 (12.4) | 77 (11.4) | 335 (12.6) |
1–2 drinks per week | 82 (12.7) | 163 (12.1) | 90 (13.4) | 335 (12.6) |
3–5 drinks per week | 92 (14.3) | 215 (16.0) | 103 (15.3) | 410 (15.4) |
6–13 drinks per week | 114 (17.7) | 257 (19.1) | 149 (22.1) | 520 (19.5) |
14 or more drinks per week | 32 (5.0) | 83 (6.2) | 33 (4.9) | 148 (5.6) |
Current medication use | ||||
Antidepressant | 44 (6.8) | 116 (8.6) | 41 (6.0) | 201 (7.5) |
Benzodiazepine | 31 (4.8) | 61 (4.5) | 31 (4.6) | 123 (4.6) |
Sleep medications | 88 (13.6) | 159 (11.8) | 72 (10.6) | 319 (11.9) |
Hypertension | 323 (50.0) | 670 (49.6) | 340 (50.2) | 1333 (49.9) |
Stroke | 22 (3.4) | 50 (3.7) | 28 (4.1) | 100 (3.7) |
Heart attack | 112 (17.3) | 232 (17.2) | 121 (17.9) | 465 (17.4) |
Transient ischemic attack | 57 (8.8) | 124 (9.2) | 75 (11.1) | 256 (9.6) |
Congestive heart failure | 47(7.3) | 77 (5.7) | 38 (5.6) | 162 (6.1) |
Type 2 diabetes | 91 (14.1) | 186 (13.8) | 78 (11.5) | 355 (13.3) |
Chronic obstructive pulmonary disease | 39 (6.0) | 64 (4.7) | 38 (5.6) | 141 (5.3) |
3 TMS score (0–100), mean (SD) | 92.7 (6.6) | 93.3 (5.5) | 92.1(6.5) | 92.9 (6.1) |
Physical Activity Scale for the Elderly Score (0–400), mean (SD) | 142.9 (74.0) | 149.1 (70.8) | 140.9(67.7) | 145.5 (70.9) |
Geriatric Depression Score (0–15), mean (SD) | 2.0 (2.3) | 1.6 (2.1) | 1.6(2.0) | 1.7 (2.1) |
Follow-up time from sleep visit (year), mean (SD) | 11.1 (4.1) | 11.2 (4.1) | 9.8(4.4) | 10.8 (4.2) |
