Table 2.
Baseline characteristics by intervention group
| CBT-I (N=53) | MEC (n=53) | |||
|---|---|---|---|---|
| Baseline Characteristic* | n | % | n | % |
| Age, years, mean (SD) | 55.0 (3.5) | 54.7 (4.7) | ||
| Race | ||||
| White | 49 | 92.5 | 48 | 90.6 |
| African American | 0 | 0.0 | 1 | 1.9 |
| Other / Unknown | 4 | 7.5 | 4 | 7.5 |
| Education | ||||
| ≤ High school diploma / GED | 3 | 5.7 | 2 | 3.8 |
| School after high school | 9 | 17.0 | 10 | 18.9 |
| College graduate | 41 | 77.4 | 41 | 77.4 |
| Married / Marriage like relationship | 44 | 83.0 | 39 | 73.6 |
| Alcohol use, drinks/day | ||||
| 0 | 19 | 35.8 | 21 | 39.6 |
| 1 | 27 | 50.9 | 27 | 50.9 |
| ≥2 | 7 | 13.2 | 5 | 9.4 |
| Smoking | ||||
| Never | 40 | 75.5 | 42 | 79.2 |
| Past | 13 | 24.5 | 10 | 18.9 |
| Current | 0 | 0.0 | 1 | 1.9 |
| Menopause status | ||||
| Postmenopausal | 34 | 64.2 | 34 | 64.2 |
| Perimenopausal | 16 | 30.2 | 15 | 28.3 |
| Indeterminate | 3 | 5.7 | 4 | 7.5 |
| Hot flashes per day, mean (SD) | 7.3 (4.5) | 7.8 (4.1) | ||
| Patient Health Questionnaire depression scale (PHQ-8), mean (SD) |
7.4 (3.4) | 8.1 (4.8) | ||
| Increase in sleep problems at menopause |
52 | 98.1 | 52 | 98.1 |
| Yes | 1 | 1.9 | 0 | 0.0 |
| No | 0 | 0.0 | 1 | 1.9 |
| Missing | ||||
| Sleep problem start time | ||||
| Within the past 6 months | 2 | 3.8 | 4 | 7.6 |
| About 6–12 months ago | 7 | 13.2 | 6 | 11.3 |
| 1 – 5 years ago | 28 | 52.8 | 20 | 37.7 |
| More than 5 years ago | 15 | 28.3 | 22 | 41.5 |
| Missing | 1 | 1.9 | 1 | 1.9 |
CBT-I = Cognitive Behavior Therapy for Insomnia; MEC = Menopause Education Condition
*
No significant differences by intervention arm for any variable