TABLE 5.

Final Model of the Hierarchical Regression Predicting Energy in Knowledge Workers at 12 Months^*

Block	Predictor	β	t	P	r 2
Demographics	Age	–0.08	–1.48	0.14	0.004
	Gender (female)	0.004	0.07	0.94	<0.001
	Education (high school or less)	0.06	1.24	0.22	0.003
	Marital status (single)	0.02	0.32	0.75	<0.001
	Annual income	0.03	0.61	0.54	0.001
Eating	Satisfaction with eating habits	0.31	5.80	<0.001	0.07
Stimulants	Coffee	0.07	1.34	0.18	0.004
	Caffeinated beverages	0.03	0.68	0.50	0.001
	Tobacco	0.03	0.62	0.54	0.001
Activity	Number of children	0.06	1.07	0.29	0.002
	Regular exercise	0.06	0.63	0.53	0.001
	Exercise satisfaction	–0.02	–0.17	0.87	<0.001
	Mobility	–0.04	–0.89	0.37	0.002
Rest	Personal reflection	0.02	0.29	0.77	<0.001
	Number of breaks	0.08	1.54	0.13	0.005
	Work reflection	0.01	0.25	0.81	<0.001
Work	Work intensity	0.04	0.48	0.64	<0.001
	Satisfaction with hours	0.009	0.18	0.86	<0.001
	Work effort	0.13	1.97	0.051	0.008
	Work-effectiveness	0.32	4.92	<0.001	0.05
Stress	Overall stress	–0.16	–2.65	0.01	0.01
	Work stress	–0.09	–1.23	0.22	0.003
	Tendency to worry	–0.15	–2.75	0.007	0.02

^*Reference categories for nominal variables are indicated in parentheses and were coded as zero in the regression analyses. r² represents the squared semipartial correlation, which indicates the unique percentage of variance accounted for in the outcome by each predictor.