TABLE 2.

AUCs of Different Models

	Training set		Internal testing set		External testing set
Model	PFS	OS	PFS	OS	PFS	OS
Combined	0.791 (0.725–0.857)	0.843 (0.786–0.899)	0.762 (0.618–0.906)	0.741 (0.572–0.911)	0.771 (0.594–0.948)	0.725 (0.534–0.916)
Radiomics	0.765 (0.697–0.834)	0.787 (0.724–0.850)	0.715 (0.559–0.870)	0.637 (0.447–0.827)	0.707 (0.515–0.899)	0.661 (0.450–0.871)
IPI	0.715 (0.624–0.807)	0.729 (0.734–0.823)	0.717 (0.569–0.864)	0.670 (0.497–0.843)	0.715 (0.531–0.900)	0.689 (0.495–0.884)
TMTV + Dmax_bulk + SUV_peak	0.696 (0.604–0.789)	0.720 (0.623–0.817)	0.623 (0.457–0.788)	0.722 (0.551–0.893)	0.652 (0.452–0.851)	0.640 (0.432–0.848)
IMPI	0.765 (0.681–0.849)	0.765 (0.676–0.854)	0.699 (0.546–0.851)	0.659 (0.479–0.839)	0.660 (0.470–0.850)	0.689 (0.495–0.884)

Dmax_bulk =distance between largest lesion and lesion farthest from that bulk; IMPI = International Metabolic Prognostic Index.
Data in parentheses are 95% CIs.