Table 2.

Insomnia and sleep duration as predictors of suicidal ideation in the replication sample (NHANES 2005–2006 cycle): Odds ratios from ordered logistic regression.

	Model 1		Model 2		Model 3
	OR	95% CI	OR	95% CI	OR	95% CI
Global insomnia	1.11**	1.04–1.19			1.09*	1.00–1.19
Sleep duration (h)
<= 4			3.85*	1.42–1.40	2.83*	1.10–7.32
5			2.93*	1.14–7.50	2.41	0.96–6.09
6			1.50	0.71–3.17	1.37	0.65–2.90
7			—		—
8			1.45	0.56–3.73	1.56	0.60–4.09
9			2.78	0.68–11.33	2.88	0.66–12.51
>= 10			3.14	0.36–27.03	3.33	0.38–29.30
Age	1.01	1.00–1.03	1.01	1.00–1.03	1.01	0.99–1.03
Female	0.91	0.45–1.84	1.03	0.51–2.10	0.94	0.47–1.87
Race-ethnicity
Non-Hispanic White	—		—		—
Non-Hispanic Black	1.23	0.69–2.20	1.11	0.62–1.98	1.18	0.67–2.07
Mexican American	1.76	0.89–3.49	1.69	0.89–3.24	1.85	0.96–3.56
Other	3.42*	1.29–9.08	3.70*	1.44–9.49	3.70*	1.44–9.52
Educational attainment
Less than 9th grade	—		—		—
9th through 11th	1.06	0.40–2.78	1.09	0.45–2.67	1.06	0.43–2.62
High school diploma	0.91	0.41–2.00	0.91	0.41–2.04	0.90	0.40–2.03
Some college	0.98	0.42–2.28	0.97	0.42–2.20	0.97	0.43–2.22
College graduate	0.72	0.25–2.11	0.76	0.26–2.24	0.74	0.25–2.21
Poverty-to-income	0.79*	0.67–0.95	0.80*	0.66–0.97	0.81*	0.67–0.98
Marital status
Married	—		—		—
Widowed	0.87	0.25–2.97	0.83	0.23–3.03	0.83	0.22–3.12
Divorced	1.60	0.81–3.15	1.61	0.82–3.15	1.63	0.84–3.19
Separated	0.87	0.32–2.32	0.82	0.31–2.19	0.81	0.30–2.21
Never married	2.01	0.96–4.20	1.92	0.92–4.00	1.94	0.93–4.03
Cohabiting	1.48	0.55–3.97	1.38	0.49–3.83	1.43	0.53–3.83
Smoking status
Non-smoker	—		—		—
Ex-smoker	.50	0.24–1.03	0.56	0.28–1.12	0.53	0.26–1.08
Current smoker	.70	0.40–1.23	0.75	0.44–1.27	0.72	0.42–1.23
Alcoholic drinks/week	1.01	0.98–1.04	1.01	0.99–1.04	1.01	0.98–1.03
Alcoholic binges/week	1.07	0.85–1.35	1.07	0.84–1.35	1.08	0.86–1.36
Depression	55.49***	21.82–141.11	63.35***	27.72–144.79	52.57***	22.05–125.32

N = 4,773. *p < 0.05, **p < 0.01, ***p < 0.001.