Table 5.
Summary of results from models testing general and differential predictors of insomnia symptoms at posttreatment.
| Moderator | ISI Total | ISI Response | ISI Remission | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Interaction | Main Effect | Interaction | Main Effect | Interaction | Main Effect | ||||||||||
| F | P adj a | F | b (97.5% CI) | P adj a | χ2 | P adj a | χ2 | b (97.5% CI) | P adj a | χ2 | P adj a | χ2 | B (97.5% CI) | P adj a | |
| BT specific predictors | |||||||||||||||
| TIB | 0.27 | .90 | 0.48 | 0.07 (−0.27, 0.13) | .78 | 0.46 | .90 | 0.11 | 0.08 (−0.42, 0.59) | .93 | 1.92 | .78 | 0.25 | 0.10 (−0.30, 0.52) | .88 |
| SE | 0.32 | .90 | 4.74 | −0.24 (−0.46, −0.02) | .28 | 0.43 | .90 | 3.10 | 0.55 (−0.06, 1.22) | .28 | 0.08 | .96 | 2.84 | 0.41 (−0.06, 0.91) | .28 |
| CT specific predictors | |||||||||||||||
| DBAS | 0.64 | .90 | 0.18 | −0.05 (−0.26, 0.17) | .88 | 2.12 | .78 | 0.00 | 0.00 (−0.54, 0.55) | .99 | 0.57 | .90 | 0.07 | 0.06 (−0.37, 0.50) | .94 |
| PSWQ | 0.38 | .90 | 0.58 | −0.07 (−0.26, 0.12) | .78 | 1.58 | .85 | 0.00 | 0.01 (−0.48, 0.48) | .99 | 3.98 | .75 | 0.04 | 0.04 (−0.35, 0.44) | .94 |
| PSS | 0.34 | .90 | 0.74 | 0.09 (−0.11, 0.28) | .73 | 1.96 | .78 | 0.30 | −0.15 (−0.70, 0.39) | .88 | 4.64 | .75 | 1.72 | −0.274 (−0.70, 0.13) | .42 |
| Life stressor | 1.49 | .75 | 0.02 | 0.01 (−0.19, 0.21) | .96 | 1.88 | .78 | 0.05 | −0.07 (−0.65, 0.56) | .94 | 5.84 | .75 | 0.20 | 0.097 (−0.33, 0.53) | .88 |
| General predictors | |||||||||||||||
| ISI baseline | 2.64 | .75 | 2.05 | 0.14 (−0.05, 0.33) | .36 | 0.11 | .96 | 45.80 | 1.95 (1.26, 2.83) | < .001 | 4.08 | .75 | 2.91 | −0.34 (−0.73, 0.05) | .28 |
| Age | 1.50 | .75 | 2.87 | 0.18 (−0.03, 0.39) | .28 | 2.65 | .75 | 0.47 | −0.19 (−0.76, 0.36) | .78 | 3.02 | .75 | 3.46 | −0.41 (−0.86, 0.02) | .28 |
| WASO | 1.30 | .75 | 3.16 | 0.20 (−0.02, 0.41) | .28 | 3.30 | .75 | 2.72 | −0.56 (−1.3, 0.10) | .28 | 1.27 | .90 | 2.95 | −0.41 (−0.94, 0.06) | .28 |
| TST | 0.25 | .90 | 4.44 | −0.21 (−0.40, −0.01) | .28 | 1.12 | .90 | 1.40 | 0.32 (−0.20, 0.87) | .49 | 0.29 | .93 | 2.62 | 0.35 (−0.07, 0.79) | .28 |
aP values for main effects and interactions were adjusted for each comparison across predictors (n = 30) using Benjamini-Hochberg correction. BT: behavioral therapy; CI = confidence interval, CT: cognitive therapy; DBAS: dysfunctional beliefs about sleep; ISI: Insomnia Severity Index; PSS: Perceived Stress Scale; PSWQ: Penn State Worry Questionnaire; SE: sleep efficiency; TIB: time in bed; TST: total sleep time, WASO: wake after sleep onset.