Table 2. Multivariate analysis for lymph node positivity and advanced nodal stage.

Characteristic	Lymph node positivity			Advanced nodal stage*
	Odds ratio	Standard error	p-value	Odds ratio	Standard error	p-value
Age	0.986	0.002	< 0.001	1.013	0.004	0.005
Race
White		Reference	0.081		Reference	0.786
Asian	0.89	0.109	0.287	0.95	0.208	0.807
Black	1.254	0.1	0.024	0.967	0.19	0.859
Tumor size	1.052	0.002	< 0.001	1.032	0.003	< 0.001
Tumor grade	1.433	0.045	< 0.001	1.357	0.09	0.001
Cancer subtype
HR+/HER2-		Reference	0.040		Reference	0.439
HR+/HER2+	0.927	0.11	0.491	1.009	0.198	0.966
HR-/HER2+	0.928	0.223	0.739	1.355	0.331	0.359
HR-/HER2-	0.686	0.132	0.004	0.744	0.244	0.226

HR=hormone receptor; HER2=human epidermal growth factor receptor 2.

^*American Joint Committee on Cancer stage N2-3.