Table 2 . Population characteristics by case-control status.
| Characteristic | Case (n = 889) | Control (n= 927) | Pa |
|---|---|---|---|
| Age (mean ± SD, years) | 41.3 ± 6.9 | 39.6 ± 6.8 | <0.001 |
| Female (%) | 41.5 | 43.6 | 0.37 |
| Self-reported ethnicity (%) | |||
| White | 52.42 | 56.42 | 0.22 |
| African American | 42.41 | 38.51 | |
| Other | 5.17 | 5.07 | |
| Subtype (%) | |||
| Cardioembolic | 20.0 | — | — |
| Large artery | 7.1 | ||
| Lacunar | 16.1 | ||
| Other known cause | 6.5 | ||
| Undetermined cause | 50.3 | ||
| Hypertension (%) | 42.7 | 19.2 | <0.001 |
| Diabetes mellitus (%) | 16.7 | 5.1 | <0.001 |
| Angina/myocardial infarction (%) | 5.3 | 0.7 | <0.001 |
| Current smoker (%) | 42.5 | 28.6 | <0.001 |
a
Unadjusted P values for age, sex, and race; age and sex-adjusted P values for other characteristics.