Table 1.
Sample characteristics prior to treatment (n=113).
| All subjects | SHE | SRT | CBTI | ||
|---|---|---|---|---|---|
| Sample size | 113 | 42 | 37 | 34 | |
| Age (M±SD) | 56.40±5.34y | 57.21±5.30 | 56.68±5.18 | 55.09±5.46 | F(2,110)=1.58, p=.21 |
| Race (n;%) | |||||
| White | 56; 49.6% | 20; 47.6% | 21; 56.8% | 15; 44.1% | |
| Black | 51; 45.1% | 20; 47.6% | 13; 35.1% | 18; 54.5% | |
| Hispanic or Latinx | 1; 0.9% | -- | 1; 2.7% | -- | |
| Not reported | 5; 4.4% | 2; 4.8% | 2; 5.4% | 1; 2.9% | |
| Years since last menses (M±SD) | 7.19±7.24 | 7.62±8.01 | 6.42±6.62 | 7.51±7.06 | F(2,110)=.29, p=.75 |
| Hormone Replacement Therapy (n;%) | 3; 2.7% | 2; 4.8% | 1; 2.7% | 0; 0.0% | χ2=1.65, p=.44 |
| Medical/Surgical Menopause (n;%) | 27; 23.9% | 7; 16.7% | 9; 24.3% | 11; 32.4% | χ2=2.55, p=.28 |
| ISI, prior to treatment (M±SD) | 15.04±4.15 | 14.86±4.45 | 15.16±3.80 | 15.12±4.23 | F(2,110)=.06, p=.94 |
Note: SHE = sleep hygiene education control. SRT = sleep restriction therapy. CBTI = cognitive behavioral therapy for insomnia. PSG = polysomnography. m = minutes. Sleep latency = minutes from lights out to first epoch of sleep. Wake after sleep onset = minutes awake post sleep onset. Sleep efficiency = proportion of time in bed spent asleep X 100. Total sleep time = minutes spent asleep during total PSG recording. F = F-statistic for one-way analysis of variance to compare means across SHE, SRT, and CBTI groups. χ2 = chi-square statistic to compare proportions across SHE, SRT, and CBTI groups. p = significance vale.