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Table 3 Results of the Cox regression analysis (stepwise backward procedure)

From: The influence of smoking and other risk factors on the outcome after radiochemotherapy for anal cancer

Variable Score Coeffizient SE HR 95% CI P
(a) Step 1       
Gender       
   Male (n = 25) 1 1.81 0.82 6.08 1.23–30.15 0.027
   Female (n = 43) 0      
Smoking       
   Yes (n = 34) 1 1.01 0.82 2.75 0.55–13.64 0.217
   No (n = 34) 0      
(b) Step 2       
Gender       
   Male (n = 25) 1 2.09 0.79 8.12 1.72–38.32 0.008
   Female (n = 43) 0      
  1. Abbreviations: SE – Standard Error, HR – Hazard Ratio, CI-Confidence Intervall