Table 3.

Percentages of CKD stage misclassification by original and modified equations in CKD stages 1 and 2a

Classification Based on:CKD Stage Based on rGFR
12
Equation 1
    CKD stage 128.60
    CKD stage 271.440
    CKD stage 3060
Equation 2
    CKD stage 126.21.7
    CKD stage 273.831.7
    CKD stage 3066.6
Equation 3
    CKD stage 152.48.3
    CKD stage 247.670
    CKD stage 3021.7
Equation 4
    CKD stage 154.813.3
    CKD stage 245.268.3
    CKD stage 3018.4
Equation 5
    CKD stage 145.210
    CKD stage 254.868.3
    CKD stage 3021.7
Equation 6
    CKD stage 147.611.7
    CKD stage 252.468.3
    CKD stage 3020

  • ↵a In CKD stage 1, equations 3 through 6 showed lower percentages of misclassification than equations 1 and 2 (P < 0.05 for equations 3 and 4; NS for equations 5 and 6). In CKD stage 2, equations 3 through 6 achieved lower percentages of misclassification than equations 1 and 2 (P < 0.05 for all).