Table 1.
Baseline demographic and clinical variables for the total sample and by treatment groups
| Variable | Total Sample mean (SD) (N = 22) | Treatment groups mean (SD) | |
|---|---|---|---|
| MO (N = 11) | CBT-I (N = 11) | ||
| Demographic | |||
| Age (yr) | 54.5 (6.9) | 56 (6) | 52 (7) |
| Gender (male), N (%) | 22 (100%) | 11 (100%) | 11 (100%) |
| Race (African American), N (%) | 16 (73%) | 11 (100%) | 5 (45%)* |
| Education (yr) | 12 (0.8) | 12 (0.9) | 12 (0.8) |
| Unemployed (past month), N (%) | 14 (64%) | 6 (55%) | 8 (73%) |
| Marital Status (single), N (%) | 18 (82%) | 9 (82%) | 9 (82%) |
| Sleep | |||
| Insomnia Severity Index total score | 18.9 (5.4) | 19.8 (5.6) | 18.0 (5.3) |
| Sleep Latency (sleep diary, min) | 51.4 (50.6) | 33.9 (20.3) | 69.0 (65.5) |
| Wake time after sleep onset (sleep diary, min) | 38.6 (27.2) | 33.7 (26.4) | 43.6 (28.4) |
| Total Sleep Time (sleep diary, min) | 286.4 (98.8) | 283.1 (115.3) | 289.6 (84.7) |
| Number of Awakenings (sleep diary, min) | 1.8 (1.1) | 1.6 (1.0) | 1.9 (1.2) |
| Dysfunctional Beliefs & Attitudes mean score | 5.4 (1.6) | 5.6 (1.7) | 5.1 (1.6) |
| Sleep Hygiene Scale total score | 34.7 (5.2) | 36.6 (4.0) | 32.9 (5.8) |
| Epworth Sleepiness Scale total score | 11.1 (5.2) | 13.1 (5.6) | 9.1 (4.1) |
| Alcohol Consumption (TLFB) | |||
| Percent Days Abstinent | 26.4 (26.3) | 25.4 (30.9) | 27.4 (22.3) |
| Proportion of Heavy Drinking Days | 0.8 (0.1) | 0.8 (0.1) | 0.9 (0.2) |
| Penn Alcohol Craving Scale total score | 7.6 (6.8) | 9.0 (6.3) | 6.1 (7.2) |
| Daytime Dysfunction | |||
| Quick Inventory of Depressive Symptoms1 | 22.1 (8.3) | 22.0 (8.6) | 22.3 (8.5) |
| Trait Subscale (State Trait Anxiety Inventory) | 47.3 (7.6) | 48.0 (8.7) | 46.7 (6.6) |
| Physical Composite Score (SF-12 scale) | 39.6 (4.6) | 39.3 (4.0) | 40.0 (5.3) |
| Mental Composite Score (SF-12 scale) | 40.1 (5.6) | 40.6 (5.0) | 39.5 (6.2) |
| Hypnotic Medication Prescriptions (N=20) | |||
| Any medication for insomnia | 8 (40%) | 3 (30%) | 5 (50%) |
| Trazodone | 4 (20%) | 3 (30%) | 1 (10%) |
| Mirtazapine | 2 (10%) | 0 (0%) | 2 (20%) |
| Gabapentin | 1 (5%) | 0 (0%) | 1 (10%) |
yr = years
*
p = 0.01
1
without the three sleep items