Table 3.

Cox Proportional Hazard Analysis of Matched Patients with pN2 or pN3 Disease

Comparison Groups	p-value	95% Confidence Interval	Variables Included in Model
MXRT*	0.952	Reference	Age, race, Charlson-Deyo comorbidity score, treatment facility type, diagnosis year, clinical M stage, ER status, PR status, HER2/neu status, hormonal therapy, chemotherapy, and axillary lymph node dissection status
XRT†		0.501 – 1.916
MXRT	0.415	Reference
MAST‡		0.558 – 4.112
MAST	0.582	Reference
XRT		0.222 – 2.327

^*Mastectomy and radiotherapy

^†Radiotherapy alone

^‡Mastectomy alone