Table 2.

Multivariate-adjusted logistic regression analysis indicating odds ratios (ORs) associated with the presence of hypertension between short and long sleep durations in the selected population. In the model, short sleep was defined as sleep durations <6 hours and in Model B; long sleep was defined as sleep durations >8 hours; reference sleep was 6 to 8 hours.

Variables	Short sleep (<6 hours)				Long sleep (>8 hours)
	P	OR	95% CI		P	OR	95% C.I.
			Lower	Upper			Upper	Lower
Sleep duration (categorized)	0.001	1.21*	1.04	1.41	0.834	1.02	0.88	1.18
Age	<0.001	1.06	1.06	1.06	<0.001	1.06	1.05	1.06
Sex (reference: male)	0.001	0.87	0.87	0.96	<0.001	0.89	0.81	0.97
Race (reference: white)	<0.001	1.68*	1.47	1.91	<0.001	1.74*	1.53	1.97
Income (reference: <$35,000)	0.004	0.90	0.81	0.99	0.10	0.94	0.85	1.03
Education (reference: high school)	0.001	0.83	0.71	0.95	0.12	1.13*	0.99	1.30
Obesity (reference: nonobese)	<0.001	2.38*	2.17	2.61	<0.001	2.45	2.23	2.69
Alcohol (reference: never)	0.34	1.07	0.93	1.22	0.51	1.03	0.91	1.16
Smoking (reference: never)	0.001	1.12*	1.02	1.22	<0.001	1.17*	1.07	1.28
Activity (reference: no physical activity)	0.74	1.02	0.92	1.12	0.93	1.02	0.93	1.13
Emotional Distress (reference: none)	<0.001	1.83*	1.35	2.48	<0.001	1.97*	1.43	2.70
Diabetes (reference: none)	<0.001	3.15*	2.69	3.70	<0.001	3.40*	2.95	3.93
Coronary heart disease (reference: none)	<0.001	2.06*	1.76	2.42	<0.001	2.03*	1.74	2.36
Stroke (reference: none)	<0.001	2.08*	1.58	2.73	<0.001	1.97*	1.48	2.62

*Variables contributing significantly to the relationship.