Table 4.

General Linear Mixed Models Examining Cognitive Function and Early Morning Awakenings (n = 16,201)

	Model 1				Model 2				Model 3
		95% CI				95% CI				95% CI
	b	Lower	Upper	p Value	b	Lower	Upper	p Value	b	Lower	Upper	p Value
Early Morning Awakenings
Direct effect of difficulty frequency
Never	Reference				Reference				Reference
Sometimes	−0.14	−0.26	−0.01	.036	−0.11	−0.24	0.02	0.086	−0.09	−0.22	0.03	0.151
Most nights	−0.23	−0.41	−0.05	.014	−0.14	−0.32	0.05	0.143	−0.12	−0.30	0.06	0.208
Direct effect of time
2004	Reference				Reference				Reference
2006	−0.34	−0.43	−0.24	.000	−0.27	−0.37	−0.18	.000	−0.26	−0.35	−0.16	.000
2010	−1.20	−1.29	−1.10	.000	−1.17	−1.27	−1.07	.000	−1.09	−1.19	−0.99	.000
2014	−1.63	−1.73	−1.52	.000	−1.64	−1.74	−1.53	.000	−1.50	−1.61	−1.40	.000
Time × Difficulty
2006 × Sometimes	−0.02	−0.19	0.14	.795	0.03	−0.13	0.20	.707	0.05	−0.11	0.22	.511
2010 × Sometimes	0.00	−0.17	0.17	.990	0.01	−0.16	0.18	.924	0.01	−0.16	0.18	.920
2014 × Sometimes	−0.14	−0.31	0.03	.111	−0.12	−0.29	0.05	.163	−0.10	−0.27	0.07	.263
2006 × Most nights	−0.20	−0.43	0.03	.084	−0.15	−0.38	0.08	.195	−0.06	−0.29	0.17	.596
2010 × Most nights	−0.03	−0.27	0.20	.788	−0.04	−0.28	0.19	.722	0.01	−0.23	0.24	.956
2014 × Most nights	−0.38	−0.62	−0.13	.003	−0.36	−0.61	−0.12	.004	−0.31	−0.56	−0.07	.012

Notes: Model 1: models include no covariates. Model 2: models include all demographic covariates. Model 3: models include all demographic and health covariates. Bold indicates significance less than .05.