A novel clinical model for predicting malignancy of solitary pulmonary nodules: a multicenter study in chinese population

Table 3 The NRI and IDI were used to assess reclassification performance and improvement in discrimination of our novel prediction model

	NRI	P Value	IDI	P Value
Training cohort
Our model vs. PKUPH model	0.177	0.005	− 0.019	0.433
Our model vs. Shanghai model	0.127	0.058	− 0.076	0.005
Our model vs. Mayo model	0.396	< 0.001	0.112	< 0.001
External validation cohort
Our model vs. PKUPH model	-0.035	0.726	− 0.043	0.341
Our model vs. Shanghai model	0.027	0.769	− 0.017	0.709
Our model vs. Mayo model	0.249	0.008	0.086	< 0.001

NRI net reclassification improvement index, IDI integrated discrimination improvement index

ISSN: 1475-2867