Table 3.
Components of insomnia as predictors of reported frequency 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 | |
| Difficulty falling asleep | ||||||
| Never | — | |||||
| Rarely | 0.45* | 0.22–0.88 | ||||
| Sometimes | 1.07 | 0.55–2.08 | ||||
| Often | 1.50 | 0.80–2.81 | ||||
| Always | 1.34 | 0.68–2.61 | ||||
| Difficulty maintaining sleep | ||||||
| Never | — | |||||
| Rarely | 0.92 | 0.42–2.02 | ||||
| Sometimes | 1.97* | 1.05–3.72 | ||||
| Often | 3.62** | 1.72–7.64 | ||||
| Always | 3.53** | 1.56–7.96 | ||||
| Early morning awakenings | ||||||
| Never | — | |||||
| Rarely | 0.64 | 0.32–1.26 | ||||
| Sometimes | 1.04 | 0.64–1.70 | ||||
| Often | 1.52 | 0.88–2.64 | ||||
| Always | 2.22 | 0.84–5.87 | ||||
| Age | 1.01 | 1.00–1.03 | 1.01 | 1.00–1.03 | 1.01 | 1.00–1.03 |
| Female | 0.97 | 0.47–2.01 | 0.87 | 0.43–1.77 | 0.98 | 0.47–2.05 |
| Race-ethnicity | ||||||
| Non-Hispanic White | — | — | — | |||
| Non-Hispanic Black | 1.19 | 0.66–2.11 | 1.24 | 0.69–2.23 | 1.21 | 0.68–2.15 |
| Mexican American | 1.66 | 0.84–3.28 | 1.79 | 0.90–3.59 | 1.67 | 0.85–3.29 |
| Other | 3.35* | 1.26–8.90 | 3.40* | 1.28–9.02 | 3.47* | 1.29–9.30 |
| Educational attainment | ||||||
| Less than 9th grade | — | — | — | |||
| 9th through 11th | 1.11 | 0.43–2.90 | 1.01 | 0.38–2.64 | 1.08 | 0.41–2.83 |
| High school diploma | 0.94 | 0.43–2.07 | 0.86 | 0.38–1.91 | 0.96 | 0.44–2.07 |
| Some college | 1.03 | 0.45–2.38 | 0.96 | 0.41–2.23 | 1.02 | 0.44–2.35 |
| College graduate | 0.77 | 0.26–2.25 | 0.70 | 0.23–2.16 | 0.77 | 0.26–2.30 |
| Poverty-to-income | 0.80* | 0.67–0.96 | 0.80* | 0.67–.95 | 0.80* | 0.67–0.96 |
| Marital status | ||||||
| Married | — | — | — | |||
| Widowed | 0.87 | 0.26–2.86 | 0.86 | 0.25–3.01 | 0.86 | 0.25–2.96 |
| Divorced | 1.58 | 0.82–3.05 | 1.61 | 0.83–3.11 | 1.56 | 0.80–3.03 |
| Separated | 0.83 | 0.32–2.17 | 0.85 | 0.28–2.53 | 0.87 | 0.35–2.15 |
| Never Married | 2.04 | 0.98–4.25 | 2.07 | 0.96–4.47 | 1.95 | 0.91–4.18 |
| Cohabiting | 1.47 | 0.53–4.12 | 1.51 | 0.58–3.94 | 1.46 | 0.53–4.04 |
| Smoking status | ||||||
| Non-smoker | — | — | — | |||
| Ex-smoker | 0.51 | 0.25–1.03 | 0.47 | 0.22–1.01 | 0.52 | 0.25–1.09 |
| Current smoker | 0.74 | 0.42–1.30 | 0.74 | 0.42–1.29 | 0.71 | 0.41–1.22 |
| Alcoholic drinks/week | 1.01 | 0.98–1.04 | 1.01 | 0.98–1.03 | 1.01 | 0.98–1.04 |
| Alcoholic binges/week | 1.05 | 0.83–1.33 | 1.07 | 0.86–1.35 | 1.06 | 0.84–1.33 |
| Depression | 66.18*** | 26.68–164.17 | 55.07*** | 22.16–136.85 | 64.29*** | 25.42–162.60 |
N = 4,773. *p < 0.05, **p < 0.01, ***p < 0.001.