Table 7.

Stepwise regression for knowledge score.

Regression model	R2	R2 change	Adjusted R2	Standard error of the estimate	F change
Model 1a	0.332	0.332	0.313	0.469	4.781
Model 2b	0.457	0.125	0.438	0.314	3.652

^aPostgraduate education.

^bPostgraduate education, manager position.