Table 2.

Values from univariate linear regression models used to determine the predictability of BSA-unadjusted and BSA-adjusted iGFR for 349 childrena

VariablesDependent Variable
BSA-Unadjusted iGFRbBSA-Adjusted iGFRc
Regression Coefficient ± SER2 (%)Regression Coefficient ± SER2 (%)
Markers of body size
    male gender0.034 ± 0.0590.10.035 ± 0.0390.2
    age (yr)0.621 ± 0.04238.7−0.007 ± 0.035<0.1
    weight (kg)0.725 ± 0.03457.40.055 ± 0.0340.8
    height (m)1.870 ± 0.10249.00.075 ± 0.0940.2
    BSA (m2)1.074 ± 0.05056.90.074 ± 0.0500.6
Markers of kidney function
    1/serum creatinine (mg/dl)0.138 ± 0.0661.20.545 ± 0.03344.4
    height (m)/Scr (mg/dl)0.748 ± 0.06726.30.775 ± 0.03165.0
    1/cystatin C (mg/L)0.745 ± 0.08318.90.777 ± 0.04447.3
    1/BUN (mg/dl)0.539 ± 0.06018.90.510 ± 0.03439.0
  • a All variables except gender in natural logarithmic scale.

  • b BSA-unadjusted iGFR = infusion/total area.

  • c BSA-adjusted iGFR = (infusion/total area) × (1.73/BSA).