Characteristics of Probable Insomnia Sample (n = 115)
| Mean ± SD or Percentage | |
|---|---|
| Age | 39.0 ± 13.4 |
| Gender (female) | 70% |
| Ethnic/racial status | |
| White | 85% |
| African American | 13% |
| Other | 2% |
| Level of education | |
| No high school degree | 6% |
| High school degree | 24% |
| Some college | 39% |
| College degree | 18% |
| Advanced degree | 12% |
| Number of medical conditions | |
| 0 | 11% |
| 1 to 2 | 45% |
| ≥3 | 44% |
| Self-rated health status | |
| Excellent | 9% |
| Very good | 26% |
| Good | 45% |
| Fair | 15% |
| Poor | 5% |
| Sleep features | |
| Duration of problem sleep | |
| <1 month | 2% |
| 1 to 3 months | 9% |
| 4 to 6 months | 9% |
| 6 to 12 months | 9% |
| >12 months | 71% |
| Usual sleep duration per night (in hours) | 5.7 ± 1.6 |
| Insomnia Severity Index | 15.5 ± 4.5 |
| Discussed sleep problem with physician | 52% |