The Value of the 8th Edition of American Joint Committee on Cancer Pathological Prognostic Staging on the Selection of Postmastectomy Radiotherapy for T1–2N1 Breast Cancer

Table 2

Cox multivariate analysis to determine the predictors of BCSS according to the 8th AJCC staging after propensity score matching.

Variables	BCSS
		95% CI
The 8th AJCC staging
Stage IA
Non-PMRT	1
PMRT	0.022	0.001-330.123	0.441
Stage IB
Non-PMRT	1
PMRT	0.795	0.339-1.865	0.598
Stage IIA
Non-PMRT	1
PMRT	1.247	0.558-2.789	0.591
Stage IIB
Non-PMRT	1
PMRT	0.331	0.100-0.967	0.044
Stage IIIA
Non-PMRT	1
PMRT	0.553	0.178-1.713	0.304

BCSS, breast cancer-specific survival; PMRT, postmastectomy radiotherapy.