Table 1.
Characteristics (%) of the Study Populationa by nINC and Medicaid Status: ARIC Community Surveillance (1993-2002)
| Characteristic | Overall | Median Household Income (nINC) | Medicaid Status | |||
|---|---|---|---|---|---|---|
| Low | Medium | High | Yes | No | ||
| n = 14,152 | n = 4,439 | n = 5,556 | n = 4,157 | n = 1,381 | n = 12,771 | |
| nINC, mean (U.S. dollars) | $42,059 | $23,629 | $42,474 | $61,189 | $29,059 | $43,465 |
| Female | 34.0 | 41.4 | 31.6 | 29.4 | 62.2 | 31.0 |
| Black | 23.2 | 57.2 | 10.6 | 3.9 | 57.8 | 19.5 |
| Study Community | ||||||
| Washington Co., MD | 16.9 | 23.6 | 60.8 | 15.6 | 90.4 | 9.6 |
| Minneapolis, MN | 19.5 | 2.0 | 33.3 | 64.7 | 96.6 | 3.4 |
| Jackson, MS | 24.3 | 65.5 | 18.8 | 15.7 | 81.1 | 18.9 |
| Forsyth Co., NC | 39.3 | 28.2 | 45.7 | 26.1 | 92.7 | 7.3 |
| Age ≥ 65 yr | 41.5 | 38.1 | 44.0 | 41.7 | 61.3 | 58.2 |
| Health Insurance Status | ||||||
| Medicaid | 9.8 | 21.5 | 5.4 | 3.0 | - | - |
| Cardiac Pain | 87.5 | 87.3 | 86.2 | 89.5 | 81.4 | 88.2 |
| Hospital Type, Teaching | 36.9 | 34.1 | 29.6 | 49.6 | 37.2 | 36.8 |
| Diabetes | 32.4 | 39.8 | 31.1 | 26.4 | 52.5 | 30.3 |
| Hypertension | 63.7 | 74.7 | 60.2 | 56.7 | 82.1 | 61.7 |
| Heart Failure | 30.4 | 36.2 | 29.6 | 25.3 | 47.5 | 28.5 |
| Medications | ||||||
| Optimal Therapy | 78.0 | 75.6 | 78.7 | 79.6 | 71.0 | 78.8 |
| Aspirin | 87.5 | 83.2 | 89.1 | 90.0 | 75.5 | 88.8 |
| β-blockers | 69.5 | 62.2 | 71.5 | 74.7 | 59.3 | 70.6 |
| ACE Inhibitors | 49.5 | 56.3 | 46.8 | 45.9 | 59.3 | 48.5 |
aWeighted to account for sampling strategy