Table 1.
Sample Characteristics
| Mean or % | Standard Error | 95% Confidence Interval | |
|---|---|---|---|
| Age | 65.88 | 0.17 | 65.53–66.22 |
| Female | 54.76% | 0.54 | 53.67–55.84 |
| Race | |||
| White | 85.05% | 0.82 | 83.40–86.70 |
| Black | 10.06% | 0.58 | 8.89–11.22 |
| Other | 4.90% | 0.47 | 3.96–5.84 |
| Years of education | 12.87 | 0.08 | 12.70–13.03 |
| Household income | 64,008 | 2,016.21 | 59,954.12–68,061.84 |
| Number of alcoholic drinks per day | 0.73 | 0.02 | 0.69–0.77 |
| Current smoker | 12.11% | 0.53 | 11.04–13.17 |
| Self-reported poor health | 24.68% | 0.73 | 23.21–26.14 |
| Chronic health conditions | 2.06 | 0.02 | 2.02–2.10 |
| Troubled with pain | 32.87% | 0.64 | 31.59–34.15 |
| Depressive symptoms | 1.05 | 0.03 | 1.00–1.11 |
| Psychiatric medication use | 14.0% | 0.56 | 12.88–15.12 |
| Insomnia symptoms | 1.77 | 0.02 | 1.73–1.81 |
| Change in insomnia severity | |||
| % Increase | 36.00% | 0.60 | 34.79-37-21 |
| No change | 36.55% | 0.60 | 35.36–37.75 |
| % Improvement | 27.45% | 0.59 | 26.28–28.63 |
| Regular prescription sleep med user† | 7.68% | 0.27 | 7.14–8.22 |
| Current sleep treatment user† | 12.42% | 0.36 | 11.69–13.15 |
| Treatment outside doctor’s recommendation† | 31.93% | 1.71 | 28.50–35.36 |
Notes: Unweighted n = 8,417.
*Fractions and means are weighted using 2006 Core weights as described in the text.
†Indicates outcome variables taken from 2010. All other variables taken from 2006.