Radiomics score: a potential prognostic imaging feature for postoperative survival of solitary HCC patients

BMC Cancer

Table 4 C-indices of rad-score based nomograms, clinicopathological nomograms and traditional staging systems

	Training cohort				Validation cohort
	TTR		OS		TTR		OS
	C-index	95%CI	C-index	95%CI	C-index	95%CI	C-index	95%CI
Rad-score	0.563	0.516–0.610	0.541	0.488–0.594	0.555	0.491–0.619	0.629	0.529–0.729
Rad-score based nomograms	0.639	0.577–0.701	0.714	0.635–0.793	0.587	0.479–0.695	0.710	0.602–0.818
Clinical-pathological nomograms	0.633	0.571–0.695	0.554	0.485–0.623	0.601	0.592–0.610	0.642	0.532–0.752
Rad-score-TNM nomogram	0.584	0.531–0.637	0.626	0.549–0.703	0.601	0.530–0.672	0.617	0.507–0.727
Rad-score-BCLC nomogram	0.580	0.526–0.634	0.627	0.549–0.705	0.601	0.523–0.679	0.622	0.509–0.735
Traditional staging system
TNM	0.552	0.513–0.581	0.575	0.515–0.635	0.553	0.499–0.607	0.521	0.453–0.589
BCLC	0.547	0.506–0.588	0.574	0.511–0.637	0.548	0.485–0.611	0.506	0.420–0.592
JIS	0.554	0.508–0.600	0.601	0.533–0.669	0.564	0.503–0.625	0.574	0.504–0.644
HKLC	0.575	0.529–0.631	0.628	0.620–0.636	0.582	0.507–0.657	0.596	0.487–0.701

Abbreviation: TNM Tumor–node–metastasis, BCLC Barcelona Clinic Liver Cancer stage system, JIS Japan Integrated Staging, HKLC Hong Kong Liver Cancer staging score

ISSN: 1471-2407