Skip to main content

Table 1 Simulation results.

From: Purposeful selection of variables in logistic regression

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

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