Synchronous and Metachronous Breast Malignancies: A Cross-Sectional Retrospective Study and Review of the Literature

Table 4

Crude and adjusted^∗ hazard ratios (HR) and 95% confidence intervals (CI) for SBC and MBC and the risk of locoregional recurrence and distant metastasis in comparison with UBC (Cox proportional hazards model).

	HR (95% CI)	𝑃	HR (95%CI)^∗	𝑃
UBC	1		1
MBC	2.03 (1.01–4.08)	<0.05	2.70 (1.04–7.03)	<0.05
SBC	0.84 (0.21–3.43)	0.809	1.42 (0.33–6.21)	0.639