Table 2.

Independent effects of marital status and number of children on likelihood of frequent insufficient sleep (≥14 days in past 30 days) among adults aged ≥18 years, by sex: behavioral risk factor surveillance system survey, 2008

	≥14 Days of insufficient sleep in past 30 days
	%a	ORb	(95% CI)	ORc	(95% CI)
Men
Total	25.7
Marital status
Never married/member of an unmarried couple	28.0	1.00	(Referent)
Married	24.3	1.06	(0.99–1.15)
Divorced/separated/widowed	28.8	1.47	(1.34–1.61)
Number of children
No children	22.5	1.00	(Referent)
1 Child	28.9	1.14	(1.05–1.23)
2 Children	30.8	1.25	(1.16–1.35)
≥3 Children	31.4	1.28	(1.16–1.40)
Women
Total	29.9
Marital status
Never married/member of an unmarried couple	33.4	1.00	(Referent)	1.00	(Referent)
Married	29.0	0.98	(0.92–1.04)	0.91	(0.85–0.97)
Divorced/separated/widowed	29.0	1.32	(1.23–1.41)	1.24	(1.16–1.33)
Number of children
No children	25.0	1.00	(Referent)	1.00	(Referent)
1 Child	34.6	1.24	(1.16–1.31)	1.24	(1.17–1.32)
2 Children	35.9	1.29	(1.22–1.37)	1.32	(1.24–1.41)
≥3 Children	39.3	1.47	(1.36–1.58)	1.50	(1.39–1.62)

^aWeighted unadjusted proportion

^bWeighted odds ratios (OR) and 95% confidence interval (CI) from multivariate logistic regression model that included age, race/ethnicity, and education as covariates and either marital status or number of children

^cWeighted OR and 95% CI from multivariate logistic regression model that included age, race/ethnicity, and education as covariates and both marital status and number of children as independent variables among women only. Among men there was a statistical interaction (P = 0.0217) between marital status and number of children in their relationship with insufficient sleep. Therefore it would not be appropriate to report results of the model given this interaction term among men