Table 1.

Baseline characteristics of the study populationa

CharacteristicResult
Number of subjects56
Age (yr)64.3 ± 10.7
Men55 (98%)
Height (in)68.3 ± 3.5
Weight (kg)99.3 ± 24.2
Hip/waist ratio1.01 ± 0.08
Body mass index (kg/m2)32.8 ± 6.9
Body surface area (m2)2.12 ± 0.27
Race
    White44 (79%)
    Black10 (18%)
    American Indian2 (4%)
Etiology of CKDb
    diabetes19 (34%)
    hypertension20 (36%)
    GN9 (16%)
    other8 (14%)
Hemoglobin (g/dl)12.3 ± 1.6
Albumin (g/dl)4.1 ± 0.3
Plasma creatinine (mg/dl)2.6 ± 1.2
Blood urea nitrogen (mg/dl)44.7 ± 25.5
Estimated GFR (ml/min/1.73 m2)31.8 ± 14.2
    stage 23 (5%)
    stage 324 (43%)
    stage 425 (45%)
    stage 54 (7%)
Median urine protein/creatinine (g/g) (interquartile range)0.40 (0.11–1.36)
  • a ± indicates SD, parentheses indicate percent of patients.

  • b Chronic kidney disease (CKD) stage is based on estimated GFR by Modification of Diet in Renal Disease formula.