Table 5. Pairwise comparison of areas under the curve among the radiological models and FS in the primary and validation cohorts.

Pairwise comparison	Primary cohort			Validation cohort
	Z	P value		Z	P value
Qualitative vs. quantitative	1.436	0.151		0.666	0.506
Qualitative vs. combined qualitative and quantitative	1.029	0.303		0.243	0.808
Quantitative vs. combined qualitative and quantitative	2.482	0.013*		0.594	0.552
Qualitative vs. FS diagnosis	0.377	0.706		1.083	0.279
Quantitative model vs. FS diagnosis	1.450	0.147		1.343	0.179
Combined qualitative and quantitative vs. FS diagnosis	0.083	0.934		1.083	0.279

*, difference was not significant at P<0.05 corrected with Bonferroni’s method. FS, frozen section.