Table 4. Cox models examining each sleep disturbance characteristic and all-cause mortality (N = 2,812).

	All-cause mortality				All-cause mortality
	Unadjusted models				Fully adjusted modelsa
	HR	p-value	Lower	Upper	HR	p-value	Lower	Upper
Difficulty with Alertness
Never/Rarely	Reference
Some Days	1.50	0.000	1.25	1.82	1.49	0.004	1.13	1.94
Most Days/Every Day	2.23	0.000	1.79	2.75	1.65	0.004	1.17	2.32
Nap Frequency
Never/Rarely	Reference
Some Days	1.32	0.012	1.06	1.64	1.38	0.032	1.03	1.85
Most Days/Every Day	2.23	0.000	1.84	2.79	1.73	0.000	1.29	2.32
Sleep Latency
<15 minutes	Reference
15-30 minutes	1.37	0.012	1.06	1.64	1.32	0.053	0.99	1.75
>30 minutes	1.20	0.140	0.94	1.54	1.14	0.444	0.81	1.63
Sleep Quality
Good/Very Good	Reference
Fair	1.13	0.225	0.93	1.37	1.24	0.119	0.94	1.63
Poor/Very Poor	1.33	0.043	1.00	1.77	1.75	0.006	1.17	2.61
Sleep Duration
7-8hours	Reference
≤5 hours	1.40	0.087	0.95	2.07	2.38	0.001	1.44	3.92
6-7 hours	1.05	0.623	0.86	1.29	1.22	0.160	0.92	1.61
≥9 hours	2.14	0.000	1.73	2.65	1.31	0.171	0.88	1.94
Snoring
Never/Rarely	Reference
Some Nights	1.41	0.037	1.02	1.96	1.40	0.181	0.85	2.29
Most Nights/Every Night	0.98	0.959	0.56	1.75	0.71	0.506	0.26	1.92

Note: bold indicates significance at the p<0.05 level.

^aAdjusted models control for demographic characteristics, including age, marital status, race, education, health conditions, body weight, and incident dementia.