Table 5.

NRI and IDI of the prognostic nomogram for POSNs patients with DM compared with TNM staging system.

Index	Training set			Validation set
	Estimate	95%CI	p–value	Estimate	95%CI	p–value
NRI (vs. AJCC TNM staging)
For 24–month OS	0.689	0.335–0.946	<0.001	0.537	0.161–0.912	<0.001
For 36–month OS	0.472	0.120–0.671	<0.001	0.603	0.362–0.843	<0.001
For 48–month OS	0.253	0.059–0.546	<0.001	0.598	0.381–0.812	<0.001
IDI (vs. AJCC TNM staging)
For 24–month OS	0.221	0.174–0.268	<0.001	0.336	0.270–0.402	<0.001
For 36–month OS	0.197	0.155–0.239	<0.001	0.310	0.250–0.370	<0.001
For 48–month OS	0.180	0.141–0.219	<0.001	0.290	0.235–0.345	<0.001