Table 3.

Axillary response in women with node positive breast cancer on neoadjuvant endocrine therapy stratified by cancer characteristics

Overall	Total	Post-net axillary status
		pN0	% of total	pN+	% of total	p
n	4580	663	14.48	3917	85.52
Clinical tumor stage
T1	558	83	14.87	475	85.13	0.96
T2	1826	272	14.90	1554	85.10
T3	1018	148	14.54	870	85.46
T4	1085	154	14.19	931	85.81
Unknown	93	6	6.45	87	93.55
Clinical nodal stage
N1	3477	535	15.39	2942	84.61	0.008
N2	703	80	11.38	623	88.62
N3	400	48	12.00	352	88.00
Tumor grade
Well-differentiated	620	91	14.68	529	85.32	0.003
Moderately differentiated	2302	301	13.08	2001	86.92
Poorly differentiated	1289	223	17.30	1066	82.70
Unknown	369	48	13.01	321	86.99
Tumor histology
Ductal	3113	475	15.26	2638	84.74	0.04
Lobular	847	105	12.40	742	87.60
Other/unknown	620	83	13.39	537	86.61

pN0 pathologically node-negative; pN+ pathologically node-positive; N node