Table 3.

Multivariate analysis of DFS in the training cohort.

Variable	Hazard ratio (95% CI)	P-value
Rad-score	3.95 (1.87–8.37)	0.0003
Lymphovascular invasion  Absent  Present	reference 2.19 (1.14–4.21)	/0.018
Molecular subtype  Luminal A  Luminal B  HER2-enriched  Triple-negative	reference 2.04 (0.61–6.81) 3.12 (0.80–12.18) 3.15 (0.75–12.43)	/0.247 0.031 0.038
N stage  0  1  2  3	reference 2.86 (1.21–6.73) 3.81 (1.46–9.97) 3.93 (1.15–12.31)	/0.016 0.006 0.007
T stage  1  2  3  4	Reference 1.46 (0.68–3.11) 2.90 (0.89–9.43) 0.80 (0.10–6.79)	/0.332 0.076 0.842

Rad-score, radiomics score; CI, confidence interval.