Table 1.

Descriptive statistics and correlations of all variables

	M or %	(SD)	2	3	4	5	6	7	8	9	10	11	12	13
1. Age	45.14	(6.32)	0.08	−0.04	−0.10	0.23	0.11	−0.08	−0.16	−0.003	−0.04	0.07	0.13	−0.09
2. Men (vs. Women)	55%			−0.17	−0.19	−0.25	0.13	0.06	−0.01	−0.17	−0.14	0.07	−0.13	−0.04
3. Race, non-White (vs. White)	31%				0.17	0.04	0.05	0.01	−0.01	0.05	−0.03	0.08	−0.07	0.05
4. Some college/technical school (vs. College graduates+)	22%					0.18	0.07	−0.12	−0.14	−0.09	−0.08	−0.02	0.01	0.04
5. Single (vs. Married/cohabiting)	13%						−0.11	0.05	−0.04	−0.21	−0.04	0.16	0.26	0.04
6. Work hours	8.53	(1.51)						−0.19	−0.01	−0.27	−0.17	−0.01	0.23	0.11
7. Bedtimes	23:57	(0:52)						0.35	0.38	−0.24	0.01	−0.01	0.27	−0.01
8. Wake times	6:22	(1:08)						0.20	0.41	0.26	0.15	−0.04	−0.03	0.004
9. Sleep hours	6.70	(0.87)						−0.22	0.31	0.32	0.46	−0.24	−0.26	−0.06
10. Sleep quality (1 = very badly to 4 = very well)	3.03	(0.41)						0.03	0.10	0.44	0.26	−0.30	−0.29	−0.27
11. Sleep latency (in minutes)	19.67	(11.27)						−0.06	−0.04	−0.19	−0.25	0.30	0.06	0.03
12. Total stressors (frequency)	1.02	(0.78)						0.09	−0.13	−0.18	−0.15	0.05	0.29	0.37
13. Cognitive interference (0 = never to 4 = very often)	1.55	(0.48)						−0.02	−0.06	−0.08	−0.17	0.04	0.35	0.48

Note. N = 130 workers, 1040 daily observations. Unadjusted Means and Standard Deviations were based on person-means across days; Intra-Class Correlations (ICC = between-person level variance / total variance) are reported on the diagonal in italics. Numbers below the diagonal are within-person level correlations and those above the diagonal are between-person level correlations; Correlations in bold were significant at P < .05.