TABLE 2.

Treatment, adjuvant therapy, National Cancer Data Base, 2004–2016

	All patients (N = 94,487)	Locoregional advanced (N = 12,325)	CAM (N = 122)	M1 (N = 82,040)	p
Surgery type					‡
Lumpectomy	9,230 (9.8%)	2,690 (21.8%)	19 (15.6%)	6,521 (7.9%)
Mastectomy	24,112 (25.5%)	9,635 (78.2%)	103 (84.4%)	14,374 (17.5%)
No surgery	60,640 (64.2%)	0 (0%)	0 (0%)	60,640 (73.9%)
Other	505 (0.5%)	0 (0%)	0 (0%)	505 (0.6%)
Lymph node surgery
# LNs examined – median (IQR)	11 (3 – 17)	15 (10 – 21)	10 (5 – 14.5)	7 (1 – 14)	< 0.001
# Positive LNs – median (IQR)	3 (1 – 10)	9 (1 – 14)	3 (1 – 8)	2 (1 – 6)	< 0.001
Receipt of chemotherapy	53,248 (56.4%)	11,658 (94.6%)	116 (95.1%)	41,474 (50.6%)	< 0.001
Receipt of endocrine therapy	47,427 (50.2%)	6,884 (55.9%)	68 (55.7%)	40,475 (49.3%)	< 0.001
Receipt of radiation therapy	39,168 (41.5%)	12,325 (100%)	122 (100%)	26,721 (32.6%)	‡

^‡Variable used in study group definition

Data presented as N (%) unless otherwise specified. Percentages may not add up to 100 due to rounding or missing values