Skip to main content

Table 1 Proportion (s) at which each of the variables entered the final model and average p-value for three automated model selection procedures based on one thousand bootstrap samples

From: Determining relative importance of variables in developing and validating predictive models

Variables Forward selection Backward selection Stepwise selection
  s p-value s p-value s p-value
Age 1.000 0.0003 0.999 0.0002 0.998 0.0003
Baseline WBC 0.991 0.0067 0.957 0.0028 0.951 0.0027
Splenomegay 0.767 0.0424 0.600 0.0071 0.610 0.0071
T-cell immunophenotype 0.748 0.0408 0.593 0.0043 0.588 0.0042
Sex 0.719 0.0493 0.465 0.0141 0.455 0.0137
Mediastinal mass 0.648 0.0576 0.450 0.0056 0.451 0.0055
Hepatomegaly 0.493 0.0621 0.307 0.0111 0.292 0.0108