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Table 2 Independent predictive indicators of postoperative radiotherapy administration following breast-conserving surgery

From: Omission of adjuvant radiotherapy following breast-conserving surgery for elderly women with early-stage pure mucinous breast carcinoma

Variables OR 95% CI P
Age (years)
 65–69 1   
 70–74 0.669 0.521–0.860 0.002
 75–79 0.492 0.385–0.630 < 0.001
  > 79 0.154 0.124–0.197 < 0.001
Race/ethnicity
 Non-Hispanic White 1   
 Non-Hispanic Black 0.917 0.673–1.249 0.582
 Hispanic (All Races) 0.914 0.663–1.259 0.583
 Other 1.432 0.990–2.069 0.056
Grade
 Well-differentiated 1   
 Moderately differentiated 1.189 1.009–1.400 0.038
 Poorly differentiated/undifferentiated 0.906 0.569–1.442 0.676
Tumor stage
 T1 1   
 T2 0.931 0.762–1.136 0.480
Chemotherapy
 No/unknown 1   
 Yes 2.219 1.158–4.251 0.016
  1. CI confidence intervals; OR odds ratio