Table 3.

Precision, goodness of fit, and agreement of eGFR derived from coefficients of indicated regression model; n = 349 children of the CKiD studya

ModeleGFR= a [height/Scr]b [1.8/Cystatin C]c [30/BUN]d [emale] [height/1.4]f
abcdefRMSER2 (%)% of eGFR within 30% of iGFR% of eGFR within 10% of iGFR
None41.0 ± 0.8000100.3510.052.220.3
Updated Schwartz41.3 ± 0.5100100.22359.679.437.0
        IA41.6 ± 0.40.599 ± 0.0380.317 ± 0.0440100.19469.484.038.4
        IB40.7 ± 0.40.640 ± 0.03500.202 ± 0.030100.19669.183.738.4
        IC40.9 ± 0.500.569 ± 0.0450.313 ± 0.032100.22658.678.235.0
        II41.1 ± 0.40.510 ± 0.0390.272 ± 0.0430.171 ± 0.029100.18572.386.338.7
        III39.1 ± 0.60.516 ± 0.0370.294 ± 0.0410.169 ± 0.0271.099 ± 0.0210.188 ± 0.0480.17675.287.745.6
  • a eGFR and iGFR, ml/min per 1.73m2; height, m; Scr, mg/dl; cystatin C, mg/L; BUN, mg/dl. Entries for a through f are regression coefficient ± SE. RMSE, root mean square error.