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Table 4 Significant prognostic factors in multivariate analysis

From: Intraoperative Electron Radiation Therapy (IOERT) in the management of locally recurrent rectal cancer

prognostic factor Local control Overall Survival
  hazard ratio p-value hazard ratio p-value
time FD to rec
< 30 months 1   1  
≥ 30 months 0.95 (0.92-0.98) 0.04 0.98 (0.96-1.01) 0.221
resection margin
R0 1   1  
R1 7.12 (2.29-22.12) 0.001 10.12 (3.76-27.27) < 0.001
R2 23.25 (7.22-74.79) < 0.001 13.04 (4.44-38.38) < 0.001
  1. FD: first diagnosis, rec: local recurrence, R0: complete resection without microscopic residual disease, R1: microscopic residual disease, R2: gross residual disease values in parentheses: 95% confidence intervals.