Zucker 2008.

Methods	Two‐stage research design. Phase 1 will consist of focus groups comprising members of parent‐training groups. Results from Phase I will be used to improve the intervention. She will then subject the improved intervention to a pilot, pre‐post, randomised design to assess preliminary efficacy in Phase 2. This initial trial will lead to further enhancements of the programme, will define the populations most suited to a group parent‐training model, will permit exploration of potential mechanisms of action, and will highlight additional participant needs for further treatment development. Allocation: Randomised Control: Active control Endpoint classification: Safety/efficacy study Intervention Model: Parallel assignment Masking: Single‐blind (outcomes assessor) Primary Purpose: Treatment
Participants	Inclusion Criteria: Age 11 to 18 years old Living at home Meet criteria for anorexia nervosa or sub‐threshold anorexia nervosa Exclusion Criteria: Active psychosis Current suicidality Medically unsafe for outpatient treatment
Interventions	Intervention group 1 Description: Group parent‐training skills Group for parents that provides psychoeducation for eating disorder and skills in behaviour management, self‐regulation, and emotion regulation Length: not stated Intervention group 2 Description: Family‐based therapy Maudsley approach Length: not stated
Outcomes	Primary outcomes: 1. BMI Secondary outcomes: 2. Eating disorder symptoms other than body weight
Notes	clinicaltrials.gov/ct2/show/NCT00672906

AN: anorexia nervosa; BDI: Beck depression inventory; BMI: body mass index; BSQ: body shape questionnaire; CBCT: cognitive behavioural couple therapy; C‐EDE: children's eating disorder examination; CRT: cognitive remediation therapy; EDE: eating disorder examination; EDI: eating disorder inventory; EDPEX: eating disorder expectations and experience; FARS: family relation scale; FBT: family‐based therapy; IIP: inventory of interpersonal problems; MPS‐F: Frost multidimensional perfectionism scale; RAB‐R: Rating of Anorexia and Bulimia Interview‐revised version; RSE: Rosenberg self‐esteem; SAS: social adjustment scale; SEED: severity of eating disorder; TSS: treatment satisfaction scale; VAS: visual analogue scale;