Table 2.

Binary Logistic Regression Models Examining Sociodemographic Predictors of Sleeping Less than Usual and Sleeping More Than Usual (N=5,175).

		Sleeping Less Than Usual (N=884)				Sleeping More Than Usual (N=1903)
Sociodemographic Variables		OR	P-Value	Lower	Upper	OR	P-Value	Lower	Upper
Age	>70	Reference
	60–69	1.33	0.117	0.93	1.89	1.23	0.103	0.96	1.57*
	50–59	2.05	0.000	1.39	3.02	1.48	0.006	1.12	1.96
	40–49	2.24	0.000	1.45	3.46	1.58	0.005	1.15	2.17
	30–39	2.92	0.000	1.86	4.58	1.62	0.005	1.15	2.27
	18–29	2.10	0.013	1.17	3.78	2.18	0.000	1.42	3.36
Sex	Male	Reference
	Female	1.86	0.000	1.56	2.22	1.20	0.007	1.05	1.37
Race	White	Reference
	Black, Hispanic, Asian	1.15	0.551	0.73	1.79	1.01	0.974	0.70	1.45
	Other	0.72	0.154	0.45	1.13	0.55	0.002	0.37	0.80
Child	No children	Reference
	Child at home	1.06	0.605	0.85	1.32	1.02	0.822	0.86	1.22
Urban/Rural	Rural	Reference
	Urban	1.32	0.002	1.11	1.63	1.16	0.049	1.00	1.34
	Suburban	1.35	0.027	1.03	1.77	1.24	0.038	1.01	1.52
Marital Status	Married/cohabiting	Reference
	Single	1.09	0.468	0.86	1.40	1.27	0.012	1.05	1.53
	Widowed	1.18	0.440	0.77	1.81	1.05	0.781	0.75	1.46
	Divorced/separated	1.39	0.028	1.04	1.87	1.46	0.002	1.16	1.85
Education	High School Diploma or GED	Reference
	College or Higher	0.69	0.072	0.46	1.03	1.51	0.000	1.21	1.88
Work	Employed	Reference
	Unemployed	1.21	0.250	0.87	1.68	1.80	0.000	1.41	2.30
	Student	1.55	0.356	0.61	3.96	2.67	0.008	1.29	5.55
	Retired	0.82	0.128	0.63	1.06	0.77	0.008	0.63	0.93
	Unable to work	1.37	0.100	0.94	2.01	1.11	0.524	0.81	1.52
	Housework	0.69	0.072	0.46	1.03	0.61	0.007	0.43	0.87
Time Zone	Pacific	Reference
	Mountain	0.88	0.196	0.72	1.07	0.80	0.004	0.68	0.93
	Central	0.89	0.481	0.65	1.23	0.72	0.012	0.56	0.93
	Eastern	1.03	0.829	0.79	1.35	1.03	0.798	0.84	1.26

^*χ² for trend=73.9, p<0.0001