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Table 4 Multivariate analysis of outcomes

From: Radiation dose escalation for loco-regional recurrence of breast cancer after mastectomy

LRR after XRT Comparison RR p-value
·Primary diagnosis    
 Size Continous 1.29 0.02
·Recurrence    
 Time to LRR Continous 0.97 0.03
 Gross tumor at XRT Yes vs. No 18.15 0.001
 Her 2 status Positive vs. Negative 5.00 0.03
OS after XRT Comparison RR p-value
·Primary diagnosis    
 Tumor stage T2-4 vs. T1 2.54 0.001
 Positive Nodes Positive vs. Negative 2.49 0.01
 Nodal LRR Yes vs. No 1.96 0.05
·Recurrence    
 ER status Positive vs. Negative 0.37 0.005
 Gross tumor at XRT Yes vs. No 1.95 0.002
DFS after XRT Comparison RR p-value
·Primary diagnosis    
 Percent Positive Nodes <25% vs. Negative 1.79 0.03
  ≥25% vs. <25% 2.73 <0.001
 Tumor stage T2-4 vs. T1 2.02 0.01
·Recurrence    
 Gross tumor at XRT Yes vs. No 1.79 0.02
DMFS after XRT Comparison RR p-value
·Primary diagnosis    
 Percent Positive Nodes <25% vs. Negative 2.30 0.003
  ≥25% vs. <25% 3.40 <0.001
·Recurrence    
 Size ≥2 cm vs. < 2 cm 1.63 0.05
 Gross tumor at XRT Yes vs. No 2.07 0.003