Table 1 Baseline characteristics of ESRD cases, weighted subcohort, and overall SCCS population who donated blood at enrollment, 2002–2009
Characteristic | ESRD Cases N = 737 | Subcohort N = 4238 | SCCS (with stored blood) N = 37,277 |
|---|---|---|---|
Age at enrollment, median (25th, 75th percentile), years | 53 (47, 59) | 50 (45, 58) | 50 (45, 57) |
eGFR, median (25th, 75th percentile), ml/min/1.73m2 | 63.3 (36.0, 98.2) | 103.2 (86.0, 117.9) | Â |
eGFR, %, ml/min/1.73m2 | |||
 ≤ 30 | 19.9 | 1.0 |  |
 31–60 | 26.0 | 4.8 |  |
 61–90 | 23.5 | 24.6 |  |
 > 90 | 30.6 | 69.6 |  |
Female, % | 52.6 | 58.8 | 59.5 |
Race-Sex categories, % | |||
 Black women | 43.6 | 40.0 | 40.0 |
 Black men | 43.4 | 30.8 | 30.1 |
 White women | 9.0 | 18.8 | 19.5 |
 White men | 4.0 | 10.4 | 10.3 |
Marital status, % | |||
 Married | 32.8 | 31.1 | 32.4 |
 Separated | 31.6 | 35.1 | 35.4 |
 Widowed | 12.2 | 10.7 | 9.6 |
 Single | 23.4 | 23.1 | 22.6 |
Education <12th grade, % | 40.7 | 32.8 | 32.4 |
Income < $15,000, % | 66.6 | 62.5 | 60.7 |
BMI, median (25th, 75th percentile), kg/m2 | 31.2 (26.3, 37.8) | 29.2 (24.8, 34.3) | 29.3 (25.1, 34.9) |
BMI categories, % | |||
 Underweight (< 18.5) | 0.5 | 1.6 | 1.1 |
 Normal (18.5–24.9) | 17.8 | 24.2 | 23.4 |
 Overweight (25–29.9) | 27.7 | 28.7 | 29.1 |
 Obese (30+) | 54.0 | 45.6 | 46.5 |
Smoking status, % | |||
 Current | 34.5 | 47.1 | 44.6 |
 Former | 24.0 | 20.3 | 21.3 |
 Never | 41.5 | 32.5 | 34.1 |
Hypertension, % | 85.9 | 54.9 | 56.2 |
Diabetes, % | 68.7 | 22.4 | 22.2 |
Stroke/TIA, % | 12.6 | 6.9 | 6.6 |
MI/Bypass, % | 14.5 | 7.0 | 7.1 |