Table 1.
Baseline characteristics
| Characteristic | Total (N = 193,385) |
|---|---|
| Age (years), mean (SD) | 62.0 (12.1) |
| Age category (years) | |
| 18–24 | 179 (0.09) |
| 25–34 | 1573 (0.81) |
| 35–44 | 10,598 (5.48) |
| 45–54 | 39,424 (20.39) |
| 55–64 | 72,784 (37.64) |
| 65–74 | 33,942 (17.55) |
| 75–84 | 28,124 (14.54) |
| ≥85 | 6761 (3.50) |
| Gender | |
| Male | 120,790 (62.46) |
| Female | 72,595 (37.54) |
| Geographic region | |
| Northeast | 19,530 (10.10) |
| Midwest | 48,983 (25.33) |
| South | 100,032 (51.73) |
| West | 24,797 (12.82) |
| Other | 43 (0.02) |
| Baseline clinical conditions | |
| Hemorrhagic stroke | 2505 (1.30) |
| Carotid artery disease | 16,202 (8.38) |
| Chronic renal failure | 21,141 (10.93) |
| Chronic obstructive pulmonary disease | 14,212 (7.35) |
| Asthma | 17,076 (8.83) |
| Mental disorders | 62,524 (32.33) |
| Osteoarthritis | 45,594 (23.58) |
| Baseline CHD risk | |
| Low risk: 0–1 CHD risk factors | 31,307 (16.19) |
| Moderate risk: 2 CHD risk factors | 33,512 (17.33) |
| High risk: any CHD or CHD risk equivalent | 128,566 (66.48) |
| Hospitalized in baseline period (any cause) | 65,440 (33.84) |
| Emergency room visit in baseline period (any cause) | 96,448 (49.87) |
| Number of ambulatory visits in baseline period (any cause), mean (SD) | 21.67 (20.69) |
Values are presented as n (%) unless otherwise stated
CHD coronary heart disease, SD standard deviation