Table 2.
Repeated measures univariate analysis of variance in the modified intent-to-treat sample
| Variable | Time | Group | Time x Group | ||||||
|---|---|---|---|---|---|---|---|---|---|
| df | F | ηp2 | df | F | ηp2 | df | F | ηp2 | |
| Clinical measures | |||||||||
| Objective binge-eating episodes | 2, 46 | 8.97** | .20 | 1, 36 | 0.03 | .00 | 2, 46 | 0.55 | .02 |
| Eating disorder psychopathology | 2, 72 | 5.84** | .14 | 1, 36 | 0.07 | .00 | 2, 72 | 0.95 | .03 |
| Food craving | 2, 56 | 22.23** | .38 | 1, 36 | 1.17 | .03 | 2, 56 | 1.68 | .05 |
| Self-efficacy | 2, 57 | 2.12 | .06 | 1, 36 | 1.81 | .05 | 2, 57 | 0.67 | .02 |
| Perceived stress | 2, 57 | 0.29 | .01 | 1, 36 | 1.26 | .03 | 2, 57 | 0.10 | .00 |
| Depressive symptoms | 2, 72 | 1.83 | .05 | 1, 36 | 0.04 | .00 | 2, 72 | 0.27 | .01 |
| Impact of weight on quality of life | 2, 63 | 2.53 | .07 | 1, 36 | 1.81 | .05 | 2, 63 | 1.28 | .03 |
| Subjective impulsivity | 2, 72 | 0.33 | .01 | 1, 36 | 0.08 | .00 | 2, 72 | 0.52 | .01 |
| Body mass index | 2, 63 | 1.30 | .04 | 1, 36 | 0.10 | .00 | 1, 63 | 1.25 | .03 |
| Waist-to-hip ratio | 2, 52 | 0.87 | .02 | 1, 36 | 2.79 | .07 | 2, 52 | 0.07 | .00 |
| Executive functions | |||||||||
| Decision making | 2, 72 | 5.02** | .12 | 1, 36 | 3.12 | .08 | 2, 72 | 1.09 | .03 |
| Cognitive flexibility | 2, 64 | 11.68** | .25 | 1, 36 | 1.24 | .03 | 2, 64 | 3.97* | .10 |
| Impulsivity | 2, 72 | 2.14 | .06 | 1, 36 | 0.34 | .01 | 2, 72 | 1.40 | .04 |
| Planning | 2, 72 | 0.59 | .02 | 1, 36 | 1.14 | .03 | 2, 72 | 1.23 | .03 |
| Inhibitory control | 2, 72 | 0.60 | .02 | 1, 36 | 0.18 | .02 | 2, 72 | 0.32 | .01 |
| Alertness | 2, 72 | 0.08 | .00 | 1, 36 | 0.10 | .00 | 2, 72 | 2.29 | .06 |
N = 38. Objective binge-eating episodes: Eating Disorder Examination; eating disorder psychopathology: Eating Disorder Examination-Questionnaire; food craving: Food Cravings Questionnaire-trait-reduced; self-efficacy: General Self-Efficacy Scale; perceived stress: Perceived Stress Questionnaire; depressive symptoms: Patient Health Questionnaire-Depression; impact of weight on quality of life: Impact of Weight on Quality of Life-Lite; subjective impulsivity: Barratt Impulsiveness Scale; decision making: Iowa Gambling Task; cognitive flexibility: Wisconsin Card Sorting Test; impulsivity: Delay Discounting Task, planning: Tower of London; inhibitory control: visual Go/NoGo paradigm
*p < .05; **p < .01