Table 8.
Association between change of DBAS medication subscale score and change of sleep and other outcomes
| DBAS medication subscale score change by treatment interaction on outcome change | DBAS Medication subscale score (baseline to posttreatment) | Treatment (CBTI) | DBAS medication subscale score change (baseline to posttreatment) × treatment | |
|---|---|---|---|---|
| PSQI change | Coefficient [95% CI] | −0.01 [−0.54, 0.52] | −1.86 [−3.04, −0.68] | 0.67 [0.02, 1.32] |
| p-value | .961 | .002 | .044 | |
| ISI change | Coefficient [95% CI] | 0.04 [−0.79, 0.88] | −3.23 [−5.10, −1.37] | 1.03 [−0.00, 2.05] |
| p-value | .917 | .001 | .050 | |
| Sleep efficiency-D change | Coefficient [95% CI] | 0.19 [−2.02, 2.40] | 5.65 [0.59, 10.72] | −2.44 [−5.18, 0.31] |
| p-value | .868 | .029 | .081 | |
| WASO-D change | Coefficient [95% CI] | −1.70 [−9.57, 6.17] | −8.90 [−26.94, 9.15] | 4.78 [−4.98, 14.54] |
| p-value | .670 | .331 | .335 | |
| Sleep efficiency-A change | Coefficient [95% CI] | −0.48 [−1.30, 0.34] | −1.15 [−3.02, 0.71] | 0.55 [−0.46, 1.57] |
| p-value | .247 | .223 | .283 | |
| ESS change | Coefficient [95% CI] | −0.34 [−0.85, 0.17] | −0.18 [−1.31, 0.96] | 0.51 [−0.11, 1.14] |
| p-value | .188 | .756 | .107 | |
| FFS change | Coefficient [95% CI] | −0.24 [−1.37, 0.88] | −1.75 [−4.26, 0.77] | 1.26 [−0.12, 2.64] |
| p-value | .669 | .171 | .074 | |
| PHQ-9 change | Coefficient [95% CI] | 0.22 [−0.44, 0.89] | −0.36 [−1.85, 1.13] | 0.51 [−0.31, 1.33] |
| p-value | .507 | .632 | .221 | |
| SF-12vs physical health | Coefficient [95% CI] | −0.32 [−1.75, 1.12] | 1.46 [−1.75, 4.67] | 0.22 [−1.53, 1.98] |
| p-value | .665 | .370 | .801 | |
| SF-12vs mental health change | Coefficient [95% CI] | −0.50 [−1.88, 0.88] | −2.39 [−5.48, 0.69] | −0.64 [−2.33, 1.05] |
| p-value | .478 | .127 | .455 |
DBAS, Dysfunctional Beliefs and Attitudes about Sleep; PSQI, Pittsburgh Sleep Quality Index; ISI, Insomnia Severity Index; sleep efficiency-D, sleep diary measured sleep efficiency; WASO-D, sleep diary measured wake after sleep onset; sleep efficiency-A, actigraphy measured sleep efficiency; ESS, Epworth Sleepiness Scale; FFS, Flinders Fatigue Scale; PHQ-9, Patient Health Questionnaire-9 items; SF-12, Medical Outcomes Study 12-item Short-Form health-related quality of life.