Table 1

Simulation results.

n
Purposeful
Stepwise
Backward
Forward

60
5.1
4.5
4.9
9
120
24.2
22.4
22.8
24.2
240
52.6
52.6
52.5
36
360
69.8
69.8
69.8
42.5
480
71.1
71.2
71.1
44.2
600
70.5
70.6
70.5
40.4

Retention of the correct model for purposeful, stepwise, backward, and forward selection methods, with no confounding present.

Bursac et al. Source Code for Biology and Medicine 2008 3:17   doi:10.1186/1751-0473-3-17