Table 3 Control group characteristics, Outcome measures, time points of assessment, dropout and abstinence rates of included studies
From: Internet-based interventions for eating disorders in adults: a systematic review
Authors | Ljotsson et al. [16] | Robinson & Serfaty [17] | Johnston et al. [15] | Carrard et al. [12] | Sanchez-Ortiz et al. [19] | Fernandez-Aranda et al. [14] | Carrard et al. [13] | Ruwaard et al. [18] |
|---|---|---|---|---|---|---|---|---|
Control group | Waiting list (n = 36) with assessment at mid-treatment and short weekly reports on eating behaviour | Unsupported self directed writing (n = 34). Waiting list control (n = 27) | Superficial writing control group (n = 46) | Waiting list control group (n = 37) with monthly email contact during waiting period | Waiting list control group (n = 38) | Waiting list (n = 31) for 12 weeks keeping a food diary, recording binge eating and purging episodes | Waiting list control group (n = 20), waiting for a weight loss treatment | Waiting list control group (n = 35). Bibliotherapy (n = 35) |
Measures | EDE-Q | BITE | BITE | EDE-Q | EDE | EDI | EDE-Q | EDE-Q |
EDI-2 | Â | Â | EDI-2 | Â | BITE | Â | Â | |
| Â | Â | Â | Â | Â | Food Diary | Â | Â | |
Assessments | Pre-treatment | Baseline | Baseline | Baseline | Baseline | Baseline | Baseline | Baseline |
Post-treatment | Post-treatment | Four weeks follow-up | Post-treatment | Post-treatment | Post-treatment | Post-tretament | Post-tretament | |
Six month follow-up | Â | Eight weeks follow-up | Six month follow-up | Three month follow-up | Â | Six month follow-up | 12 month follow-up | |
Treatment dropout | 31.4% | 47.2% | 16.7% | 24.3% | 21.1% | 45.0% | 9% | 25.7% |
Study dropout | 2.9% | 37.1% | 14.9% | 17.6% | 11.8% | n.a. | 4.8% | 21.0% |
Definition of abstinence | no episodes of binge eating or purging during the 28 days prior to the post-treatment assessment | Criteria for an eating disorder are no longer fulfilled | Participants not falling within the clinical range of the BITE total score | Abstinence from OBEs as measured by the EDE-Q for the last 28 days | Lack of vomiting and laxative abuse abstinence from OBEs over a month long period | Abstinence of binges and vomits: no information about duration available | No binge episode over the last three months | No binge or purging episode over the last 28 days according to EDE-Q |
Rate of abstinence (Intervention group) | 37% | 23.5% | 23.7% (at baseline) to 35% (at 8 week follow-up) | 35.1% | 25.8% | 22.6% | 45% | Bingeing: 57% (at baseline) to 94% at post-treatment |
Purging: 60% (at baseline) to 100% at post-treatment | ||||||||
Rate of abstinence (Control group) | 15% | 0.0% | n.a. | 8.1% | 13.9% | 0% | 15% | Bingeing: 77% (at baseline) to 86% at post-treatment |
Purging: 83% (at baseline) to 89% at post-treatment |