Table 2.

Logistic regression analysis of clinical and pathologic factors with axillary lymph node metastases.

Variables	Axillary lymph node metastases
	Univariate		Multivariate
	Odds ratio (95% CI)	p	Odds ratio (95% CI)	p
Clinical factors
Tumor size, mm	1.559 (1.423–1.708)	<0.0001*	1.356 (1.228–1.498)	<0.0001*
Pathologic factors
Estrogen receptor
Positive vs. negative	1.208 (0.958–1.525)	0.1108
Progesterone receptor
Positive vs. negative	1.410 (1.122–1.773)	0.0032*	1.329 (0.898–1.969)	0.156
HER2
Positive vs. negative	1.531 (1.168–2.005)	0.0020*	0.977 (0.531–1.799)	0.942
Lymphovascular invasion
Positive vs. negative	9.282 (7.218–11.936)	<0.0001*	8.219 (6.323–10.684)	<0.0001*
Grade
II, III vs. I	1.694 (1.247–2.303)	0.0008*	1.492 (1.034–2.152)	0.032**

^*p<0.01;

^**p<0.05;

CI – confidence interval.