Radiomics Analysis Based on Automatic Image Segmentation of DCE-MRI for Predicting Triple-Negative and Nontriple-Negative Breast Cancer

Table 1

Clinical features of the patients.

Characteristic	Total	Training cohort	Test cohort	value
Number (%)	81 (100)	57 (70.4)	24 (29.6)
Age (year)^a				0.47
Molecular subtypes				0.98
TNBC	44	31 (70.5)	13 (29.5)
Luminal A	13	9 (69.2)	4 (30.8)
Luminal B	12	8 (66.7)	4 (32.3)
HER2-enriched	12	9 (75.0)	3 (25.0)

^aQuantitative variables are expressed as . (TNBC: triple-negative breast cancer; HER2: human epidermal growth factor receptor 2.).