Table 3. Multivariate Logistic Regression Analysis of Risk Factors between the Early- and No-Recurrence Groups.

Risk Factor			OR (95% CI)	p-Value
Clinicopathologic factors
	TNM stage	Stage I	1 (reference)
		Stage II	1.44 (0.63–3.32)	0.390
		Stage III	3.47 (1.12–10.73)	0.031
	Histologic grade	Grade I/II	1 (reference)
		Grade III	1.89 (0.75–4.79)	0.180
	ER	Positive	1 (reference)
		Negative	1.84 (0.75–4.53)	0.187
	Ki-67 (%)	Low (< 14)	1 (reference)
Imaging Features
	Vascularity type on US	Absent	1 (reference)
		Internal vascularity	1.92 (0.77–4.79)	0.160
		Vessels in rim	3.32 (1.38–8.02)	0.008
	Multifocality on different modalities (MG, US, MRI)	Single	1 (reference)
		Multifocal	2.17 (0.49–10.00)	0.310

CI = confidence interval, ER = estrogen receptor, MG = mammography, OR = odds ratio, US = ultrasonography