Table 4.

Risk model Delong-test

Test Results Comparison	Z value	P value	Area under curve difference	Standard error difference	Confidence Interval
					lower	upper
PNI-Risk	10.512	<0.001	0.681	0.260	0.554	0.808
Unite-Risk	10.662	<0.001	0.683	0.261	0.557	0.808

Note: PNI, Prognostic Nutritional Index.