Table 1.

Demographic, clinical, and laboratory characteristics of CRIC study participants stratified by race

Black (n = 1347)White (n = 1532)P
Age58 ± 1159 ± 110.21
Female gender (%)5140<0.001
eGFR (ml/min per 1.73 m2)43 ± 1443 ± 130.67
Body mass index (kg/m2)34 ± 831 ± 7<0.001
Diabetes (%)5242<0.001
Medications (%)
    phosphorus binders11140.02
    activated vitamin D420.03
Annual income (%)<0.001
    ≤$20,0004821
    $20,001 to $50,0003129
    >$50,0002150
Educational attainment (%)<0.001
    less than high school degree258
    high school graduate2118
    greater than high school degree5474
Employment status (%)<0.001
    employed2948
    unemployeda3315
    retired3432
    otherb45
Laboratory values
    creatinine (mg/dl)1.9 ± 0.61.6 ± 0.5<0.001
    albumin (g/dl)3.9 ± 0.54.0 ± 0.4<0.001
    calcium (mg/dl)9.2 ± 0.59.2 ± 0.50.84
    parathyroid hormone (pg/ml)67 (41, 115)45 (31, 72)<0.001
  • Results are presented as mean ± SD, median (interquartile range), or frequencies.

  • aIncludes medically disabled.

  • bIncludes homemakers and students.