Normal-tissue complication probability (NTCP) model with a Child-Pugh score increase of 2+ as the endpoint, with (A) normal liver generalized equivalent uniform dose versus NTCP, with patient outcomes shown as open circles, binned observed complication rates shown as open squares, and the best-fit model with a = 0.06, m = 0.8, and D50
= 19 Gy shown as a solid line with 95% confidence interval bands, and (B) calibration plot of calculated NTCP versus observed complication rates, with the dashed line representing perfect agreement.