From:  Prediction of absolute bioavailability of medicines in adults and children from oral clearance

 Within fold-error and statistical analysis for the prediction of absolute bioavailability in children (n = 35).

Fold-error and statistical analysis
Fold-errorLBFLPF
    0.5–233 (94.3%)35 (100.0%)
    0.5–1.523 (65.7%)31 (88.6%)
    0.7–1.318 (51.4%)28 (80.0%)
    > 22 (5.7%)0 (0.0%)
    < 0.50 (0.0%)0 (0.0%)
Bias15.24.7
RMSE21.115.0
AFE1.321.11
AAFE1.371.19

LBF: liver blood flow; LPF: liver plasma flow; AFE: average fold error; AAFE: absolute AFE; RMSE: root mean square error. % is of total observations.