Table 1.
Baseline (ARIC visit-1, 1987–89) Participant Characteristics Stratified by Myocardial Infarction Status
| Characteristics* | No MI (n=8607) | Silent MI (n=305) | Clinical MI (n=331) | p-value† |
|---|---|---|---|---|
| Age (years) | 54 ±5.6 | 55 ±5.9 | 55 ±5.6 | <.001 |
| Women | 5,063 (59%) | 133 (44%) | 87 (26%) | <.001 |
| African-American | 1,771 (21%) | 69 (23%) | 48 (15%) | .017 |
| Heart rate (beats/minute) | 65.6 ±9.6 | 66.9 ±10.5 | 65.3 ±9.6 | .045 |
| Smoking Status | <.001 | |||
| Current | 1,770 (21%) | 75 (25%) | 95 (29%) | |
| Past | 2,800 (32%) | 96 (31%) | 124 (37%) | |
| Never | 4,030 (47%) | 134 (44%) | 111 (34%) | |
| Body mass index (kg/m2) | 27 ±5.0 | 29 ±5.6 | 28 ±4.2 | <.001 |
| Systolic blood pressure (mmHg) | 118 ±17 | 125 ±19 | 125±19 | <.001 |
| Hypertension | 2,280 (27%) | 121 (40%) | 130 (39%) | <.001 |
| BP lowering medication use | 1,910 (22%) | 102 (33%) | 99 (30%) | <.001 |
| Diabetes | 620 (7.3%) | 51 (17%) | 48 (15%) | <.001 |
MI= myocardial infarction; BP= blood pressure
*
Values expresses as mean± SD or n (%)
†
p-value for comparison among the three groups using analysis of variance and χ2for continuous and categorical variables, respectively