Radiation Receipt by Response to Neoadjuvant Chemotherapy (NACT), cN1 Breast Cancer Patients who Underwent Surgery post‐NACT, National Cancer Data Base (NCDB), 2010‐2015 (n=26,009)a
a Limited to patients with post‐neoadjuvant chemotherapy nodal classification of ypN0 or ypN1. Two‐sided Cochran‐Armitage trend tests: (1) rates of nodal pCR (ypN0) after NACT, p<0.001, (2) rates of nodal radiation for ypN0 patients, p=0.29, (3) rates of nodal radiation for ypN1 patients, p<0.001.