T2-weighted MRI-based radiomics for discriminating between benign and borderline epithelial ovarian tumors: a multicenter study

Insights into Imaging

Table 4 Comparison of models in internal and external validation sets

Models	Internal validation set			External validation set
Models	Difference between areas	95% CI	p value	Difference between areas	95% CI	p value
Model1 versus Model2	0.088	− 0.034 to 0.210	0.159	0.160	− 0.156 to 0.476	0.320
Model1 versus Model3	0.018	− 0.044 to 0.079	0.574	0.067	− 0.105 to 0.239	0.446
Model2 versus Model3	0.070	− 0.032 to 0.172	0.178	0.227	0.034 to 0.421	0.021*

Model1: radiomics model; Model2: clinic-radiological model; Model3: combined model; CI, confidence interval
*p < 0.05