TABLE 4.

Final Model of the Hierarchical Regression Predicting Energy in Knowledge Workers at 6 Months^*

Block	Predictor	β	t	P	r 2
Demographics	Age	–0.04	–0.69	0.49	0.001
	Gender (female)	–0.10	–1.87	0.06	0.006
	Education (high school or less)	0.02	0.33	0.74	<0.001
	Marital status (single)	0.12	2.23	0.03	0.01
	Annual income	0.03	0.64	0.52	0.001
Eating	Satisfaction with eating habits	0.14	2.57	0.01	0.01
Stimulants	Coffee	–0.11	–2.09	0.04	0.008
	Caffeinated beverages	–0.05	–0.92	0.36	0.002
	Tobacco	0.09	1.73	0.09	0.006
Activity	Number of children	0.10	2.01	0.046	0.008
	Regular exercise	0.05	0.54	0.59	0.001
	Exercise satisfaction	0.08	0.89	0.37	0.002
	Mobility	–0.11	–2.23	0.03	0.01
Rest	Personal reflection	0.004	0.07	0.95	<0.001
	Number of breaks	0.10	1.98	0.049	0.008
	Work reflection	0.07	1.27	0.20	0.003
Work	Work intensity	–0.03	–0.42	0.68	<0.001
	Satisfaction with hours	0.06	1.20	0.23	0.003
	Work effort	0.16	2.36	0.02	0.01
	Work-effectiveness	0.16	2.76	0.006	0.02
Stress	Overall stress	–0.31	–5.21	<0.001	0.06
	Work stress	–0.07	–1.02	0.31	0.002
	Tendency to worry	–0.24	–4.70	<0.001	0.05

^*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.