Table 6.

Multivariate Analyses

Stepwise Cox Regression for DFS (n = 199 cases with complete data)
Variables in Order of Selection to Model Risk6-150P6-151
Cytogenetics  1.7 <.001  
Log WBC count  1.3  <.001  
Mediastinal mass 4.1  .002  
Age (continuous)  1.02  .008  
Treatment protocol  1.6  .03 
Stepwise Cox Regression for Survival (n = 251 cases with complete data)  
Variables in Order of Selection to Model  Risk6-150 P6-151 
Age (continuous)  1.03  <.001 
Log WBC count  1.3  <.001  
Mediastinal mass  3.1 .001  
Treatment protocol  1.5  .02 
Stepwise Cox Regression for DFS (n = 199 cases with complete data)
Variables in Order of Selection to Model Risk6-150P6-151
Cytogenetics  1.7 <.001  
Log WBC count  1.3  <.001  
Mediastinal mass 4.1  .002  
Age (continuous)  1.02  .008  
Treatment protocol  1.6  .03 
Stepwise Cox Regression for Survival (n = 251 cases with complete data)  
Variables in Order of Selection to Model  Risk6-150 P6-151 
Age (continuous)  1.03  <.001 
Log WBC count  1.3  <.001  
Mediastinal mass  3.1 .001  
Treatment protocol  1.5  .02 
F6-150

Risk represents the hazard ratio for a patient in the unfavorable risk category of a variable relative to one in the better risk category of that variable with values for the other variables fixed. For log WBC, it represents the hazard ratio corresponding to an increase of 1 log WBC with all other variables fixed. For age as a continuous variable, it represents the hazard ratio corresponding to an increase of 1 year in age, with all other variables fixed.

F6-151

The P value (adjusted for variables already in the model) for entry to the model.

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