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 adults (medicines excreted renally) (n = 22).

Fold-error and statistical analysis
Fold-errorLBFLPF
    0.5–222 (100.0%)22 (100.0%)
    0.5–1.519 (86.4%)20 (90.9%)
    0.7–1.314 (63.6%)18 (81.8%)
    > 20 (0.0%)0 (0.0%)
    < 0.50 (0.0%)0 (0.0%)
Bias11.60.6
RMSE18.214.7
AFE1.211.03
AAFE1.261.22

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