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Table 3 Multivariate Cox regression analysis for loco-regional recurrence-free survival (LRFS) and overall survival (OS) for DCIS

From: Role of postoperative radiotherapy in reducing ipsilateral recurrence in DCIS: an observational study of 1048 cases

  LRFS OS
Variable HR 95% CI p HR 95% CI p
Age at diagnosis    0.089    < 0.001
  < 50 years 1    1   
 50–69 y 1.014 0.625–1.645   4.809 0.639–36.165  
  ≥ 70 y 0.423 0.180–0.994   34.505 4.594–259.164  
Radiotherapy    0.008    0.069
 yes 0.579 0.384–0.872   0.526 0.263–1.052  
 no 1    1   
Multifocality    0.818    0.790
 yes 1    1   
 no 1.125 0.412–3.077   0.822 0.194–3.482  
Resection margins    0.424    0.948
 R0 1    1   
 R1–2 1.449 0.583–3.602   1.049 0.246–4.474  
Endocrine Therapy    0.097    0.274
 yes 1    1   
 no 1.710 0.906–3.226   0.621 0.265–1.458