Table 1.
General characteristics of type 2 diabetes cases and controls in the Black Women’s Health Study1
| Characteristic2 | Cases (n = 2,632) | Controls (n = 2,596) |
|---|---|---|
| Age, years (mean) | 50.1 | 47.7 |
| BMI, kg/m2 (mean) | 34.7 | 29.4 |
| African ancestry, % (mean) | 80.0 | 78.0 |
| Education ≥16 years, % | 45.6 | 56.7 |
| Neighborhood SES, % | ||
| First quintile (poorest) | 23.0 | 17.5 |
| Fifth quintile (richest) | 15.9 | 22.8 |
| Region of residence, % | ||
| Northeast | 25.5 | 25.5 |
| South | 33.7 | 33.2 |
| Midwest | 24.3 | 24.3 |
| West | 16.5 | 17.0 |
| Health insurance coverage at baseline, % | 92.7 | 93.2 |
1
Characteristic values were taken from the last completed questionnaire before diagnosis for cases, and from the matched questionnaire for controls
2
All characteristics, except region of residence and health insurance coverage, were significantly different between cases and controls (P<0.05)