Table 1.

Baseline characteristics of 349 children of the CKiD studya

VariableValue
Male gender (%)61
Race (%)
    white69
    black15
    other8
    >1 race8
Hispanic ethnicity (%)15
Tanner stage (%)
    I60
    II11
    III8
    IV14
    V7
CKD cause (%)
    GN diagnosis20
    non-GN (genito-urinary, cystic, hereditary)73
    non-GN other7
Age (yr; median [IQR])10.8 (7.7 to 14.3)
Height (m; median [IQR])1.4 (1.2 to 1.6)
Height percentile (median [IQR])b22.8 (5.5 to 51.3)
Weight (kg; median [IQR])35.0 (23.6 to 53.0)
Weight percentile (median [IQR])b45.3 (15.0 to 78.2)
BSA (m2; median [IQR])1.2 (0.9 to 1.5)
BMI (kg/m2; median [IQR])18.1 (16.2 to 21.6)
BMI percentile (median [IQR])b64.4 (35.3 to 88.4)
Serum creatinine (mg/dl; median [IQR])1.3 (1.0 to 1.8)
Height (m)/serum creatinine (mg/dl; median [IQR])1.0 (0.8 to 1.3)
Cystatin C (mg/L; median [IQR])1.8 (1.5 to 2.3)
BUN (mg/dl; median [IQR])27.0 (22.0 to 38.0)
Iohexol GFR (ml/min per 1.73 m2; median [IQR])41.3 (32.0 to 51.7)
  • a GN, glomerulonephritis; IQR, interquartile range.

  • b Age- and gender-specific percentiles using standard growth charts for US children.