Table 3 Power calculations
Outcome | Minimal relevant difference (points) | SD (points) | Risk of type I error | Power (N = 128) | Power (N = 170) |
|---|---|---|---|---|---|
Eating Disorder Examination (EDE) | 0.5 | 1.33 | 5% | 55.9% | 68.3% |
Outcome Rating Scale (ORS) | 4.5 | 9.5 | 5% | 75.8% | 86.7% |
Symptom Check List (SCL-90-R) | 0.3 | 0.67 | 5% | 71.0% | 82.8% |
WHO-Five Wellbeing Index (WHO-5) | 2.5 | 5.6 | 5% | 70.8% | 82.5% |
Sheehan Disability Scale (SDS) | 3.5 | 7.1 | 5% | 79.1% | 89.2% |