Predicting Axillary Response in Hormone Receptor-Positive Breast Cancer after Neoadjuvant Chemotherapy Using Real-World Data

Table 3

Multivariate regression analysis for the test set (n = 175).

Characteristics	Odds ratios	95% CI	values
LVI (positive)	6.438	1.715–24.168	0.006
Breast surgery (BCS)	4.972	1.398–17.688	0.013
HER2 (negative)	3.117	1.135–8.562	0.027
Ki-67 (<14%)	3.671	1.284–10.495	0.015
US of lymph nodes (positive)	4.613	1.495–14.238	0.008
Histologic grade (III)	4.809	1.332–17.366	0.017

CI = confidence interval; LVI = lymphovascular invasion; BCS = breast conserving surgery; HER2 = human epidermal growth factor receptor 2; US = ultrasound. Only patients with available data are used in the analysis.