Table 5.

Multivariate analysis of clinical and pathological characteristics associated with sentinel lymph node involvement.

Characteristics	Odds ratio	95% CI	P
Tumor size >2 cm	2.443	1.297–4.603	.006 *
HER2 positivity	3.169	1.421–7.067	.005 *
Presence of LVI	12.441	6.246–24.779	<.01 *
Palpable tumor	2.276	1.028–5.037	.043 *
Presence of microcalcification	26.559	13.444–52.469	<.01 *
Presence of multicenter tumor	2.351	1.173–4.715	.016 *
Thick cortex lymph node	2.367	1.121–5.000	.024 *

CI = confidence interval, HER2 = human epidermal growth factor receptor 2, LVI = lymphovascular invasion.

^* P < .05.