Table 1.
Characteristics of end-stage renal disease cases and controls from the Southern Community Cohort Study
| Variable | ESRD cases (n = 1,074) |
Controls (n = 3,230) |
P |
|---|---|---|---|
| Age at enrollment, yearsa | 54.6 ± 9.0 | 54.6 ± 8.8 | -- |
| Sex, % womena | 54.8 | 55.4 | -- |
| Race, % blacka | 86.3 | 86.9 | -- |
| Body mass index, kg/m2 | 31.8 ± 8.2 | 30.3 ± 7.2 | <0.0001 |
| Smoking status, % | 0.13 | ||
| Current smoker | 37.6 | 40.9 | |
| Past smoker | 26.6 | 24.3 | |
| Never smoker | 35.8 | 34.7 | |
| Education < high school, % | 37.0 | 34.4 | 0.13 |
| Household income < $15,000/year, % | 68.5 | 59.7 | <0.0001 |
| History of hypertension, % yes | 84.2 | 61.3 | <0.0001 |
| History of diabetes, % yes | 63.9 | 23.0 | <0.0001 |
Abbreviations: ESRD end-stage renal disease
Continuous variables are expressed as mean ± SD and categorical variables as percentage (%)
aMatching variable