Model

Variables Entered

Variables Removed

Method

1

lnE

.

Stepwise (Criteria: Probability-of-F-to-enter <= 0.010,

Probability-of-F-to-remove >= 0.110).

2

lnI

.

Stepwise (Criteria: Probability-of-F-to-enter <= 0.010,

Probability-of-F-to-remove >= 0.110).