Table 2.

Dyadic models of insomnia symptoms and incident heart disease at 4 yr follow-up: odds ratios and 95% confidence intervals

	Model 1		Model 2		Model 3		Model 4
	Unadjusted		+ Sociodemographic		+ Health status		+ Health behavior
	Wives	Husbands	Wives	Husbands	Wives	Husbands	Wives	Husbands
Insomnia symptoms indexa
Actor effects	1.14***	1.15***	1.13**	1.15***	1.06	1.11**	1.06	1.12**
	[1.06, 1.23]	[1.08, 1.22]	[1.04, 1.22]	[1.07, 1.23]	[0.98, 1.16]	[1.04, 1.20]	[0.98, 1.16]	[1.04, 1.20]
Partner effects	1.04	1.07*	1.04	1.08*	1.03	1.07*	1.03	1.07*
	[0.97, 1.12]	[1.01, 1.14]	[0.97, 1.12]	[1.01, 1.15]	[0.96, 1.11]	[1.00, 1.15]	[0.95, 1.11]	[1.00, 1.14]
Covariates
Age			1.02**	1.04***	1.02*	1.04***	1.03***	1.04***
			[1.01, 1.04]	[1.03, 1.06]	[1.01, 1.04]	[1.02, 1.06]	[1.01, 1.05]	[1.03, 1.06]
Race/Ethnicity (reference: White (non-Hispanic))
Black (non-Hispanic)			1.00	0.69†	0.83	0.62*	0.78	0.60*
			[0.64, 1.57]	[0.45, 1.06]	[0.52, 1.30]	[0.41, 0.95]	[0.49, 1.23]	[0.39, 0.92]
Other race (non-Hispanic)			1.24	0.63	1.25	0.65	1.31	0.65
			[0.55, 2.79]	[0.28, 1.44]	[0.56, 2.82]	[0.28, 1.50]	[0.58, 2.95]	[0.28, 1.51]
Hispanic (any race)			1.26	0.63*	1.11	0.62*	1.20	0.64
			[0.78, 2.03]	[0.39, 1.02]	[0.68, 1.81]	[0.38, 1.00]	[0.74, 1.93]	[0.40, 1.04]
Married			0.94	1.15	1.00	1.13	1.05	1.14
			[0.56, 1.59]	[0.67, 1.98]	[0.59, 1.69]	[0.65, 1.95]	[0.62, 1.79]	[0.66, 1.96]
Education (years)			0.97	0.96	0.98	0.97	0.99	0.97
			[0.92, 1.02]	[0.91, 1.01]	[0.93, 1.04]	[0.92, 1.02]	[0.94, 1.05]	[0.92, 1.02]
Income (logged)			0.97	0.90†	1.00	0.90*	1.00	0.90*
			[0.89, 1.06]	[0.83, 0.98]	[0.90, 1.11]	[0.83, 0.98]	[0.89, 1.12]	[0.83, 0.98]
Working for pay			0.59**	0.90	0.66*	1.03	0.69*	1.06
			[0.41, 0.84]	[0.66, 1.24]	[0.46, 0.94]	[0.75, 1.42]	[0.49, 0.98]	[0.77, 1.46]
Chronic conditionsb					1.44***	1.36***	1.42***	1.38***
					[1.22, 1.70]	[1.18, 1.58]	[1.20, 1.67]	[1.20, 1.60]
Normal weight					0.60*	0.82	0.58**	0.77
					[0.41, 0.89]	[0.57, 1.18]	[0.39, 0.85]	[0.54, 1.12]
Depressive symptomsc					1.16***	1.07	1.15***	1.06
					[1.07, 1.26]	[0.98, 1.18]	[1.06, 1.26]	[0.97, 1.17]
Current smoker							1.94***	1.65**
							[1.31, 2.87]	[1.14, 2.39]
Problem drinkingd							0.97	1.12
							[0.71, 1.33]	[0.85, 1.47]
Moderate/vigorous physical activity weekly or more							0.66	0.74
							[0.32, 1.33]	[0.44, 1.24]

Dyad N = 3,221.

^aSummation of the four insomnia symptom items (range: 0–8).

^bNumber of chronic health conditions diagnosed by a doctor (range: 0–5).

^cSeven-item version of the Center for Epidemiological Studies-Depression scale (range: 0–7).

^dMore than 14 drinks/week for men and more than 7 drinks/week for women.

^† p < .10; * p < .05; ** p < .01; *** p < .001.