TABLE 4.

Occupational correlates of memory.

Independent variable	Std. beta	t	p	VIF
Age	–0.039	–0.390	0.697	1.3
Gender	0.476	4.8	<0.001	1.3
Education	–0.085	–0.769	0.444	1.6
Income	0.027	0.256	0.798	1.4
Officials	–0.389	–0.969	0.336	20.1
Professional	–0.439	–1.0	0.302	23.2
Technician	0.086	0.474	0.637	4.3
Sales	–0.186	–0.791	0.432	7.2
Clerical	–0.276	–0.834	0.407	14.3
Skilled	–0.132	–0.738	0.463	4.2
Semiskilled	–0.093	–0.321	0.759	11.0
Unskilled	–0.031	–0.241	0.810	2.2
Service	–0.072	–0.308	0.759	7.0
Employment status	–0.098	–0.959	0.340	1.3
Years in occupation	–0.076	–0.764	0.447	1.3
Years MRI/cog − occupation	0.043	0.446	0.657	1.2
Job complexity	0.088	0.810	0.420	1.5
Occupational psychological stress	0.184	1.9	0.058	1.2
Occupational physical stress	–0.292	–2.8	0.007	1.5

VIF, variance inflation factor. Bold values p < 0.05.