title: Effectiveness of a brief school-based body image intervention 'Dove Confident Me: Single Session' when delivered by teachers and researchers: Results from a cluster randomised controlled trial.
abstract: This study evaluated a 90-min single session school-based body image intervention (Dove Confident Me: Single Session), and investigated if delivery could be task-shifted to teachers. British adolescents (N = 1707; 11-13 years; 50.83% girls) participated in a cluster randomised controlled trial [lessons as usual control; intervention teacher-led (TL); intervention researcher-led (RL)]. Body image, risk factors, and psychosocial and disordered eating outcomes were assessed 1-week pre-intervention, immediate post-intervention, and 4-9.5 weeks follow-up. Multilevel mixed-models showed post-intervention improvements for intervention students relative to control in body esteem (TL; girls only), negative affect (TL), dietary restraint (TL; girls only), eating disorder symptoms (TL), and life engagement (TL; RL). Awareness of sociocultural pressures increased at post-intervention (TL). Effects were small-medium in size (ds 0.19-0.76) and were not maintained at follow-up. There were no significant differences between conditions at post or follow-up on body satisfaction, appearance comparisons, teasing, appearance conversations and self-esteem. The intervention had short-term benefits for girls' body image and dietary restraint, and for eating disorder symptoms and some psychosocial outcomes among girls and boys. A multi-session version of the intervention is likely to be necessary for sustained improvements. Teachers can deliver this intervention effectively with minimal training, indicating broader scale dissemination is feasible.
  
  
  BACKGROUND
  ISRCTN16782819.
authors.affiliation: Centre for Appearance Research, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK. Electronic address: phillippa.diedrichs@uwe.ac.uk.
authors.forename: Phillippa C
authors.initials: PC
authors.lastname: Diedrichs
authors.affiliation: Centre for Appearance Research, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.
authors.forename: Melissa J
authors.initials: MJ
authors.lastname: Atkinson
authors.affiliation: Centre for Appearance Research, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.
authors.forename: Rebecca J
authors.initials: RJ
authors.lastname: Steer
authors.affiliation: Centre for Appearance Research, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.
authors.forename: Kirsty M
authors.initials: KM
authors.lastname: Garbett
authors.affiliation: Centre for Appearance Research, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.
authors.forename: Nichola
authors.initials: N
authors.lastname: Rumsey
authors.affiliation: Centre for Appearance Research, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.
authors.forename: Emma
authors.initials: E
authors.lastname: Halliwell
mesh_terms: D000293:Adolescent; D001828:Body Image / Q000523:psychology; D002648:Child; D001068:Feeding and Eating Disorders / Q000517:prevention & control* / Q000628:therapy*; D005260:Female; D006266:Health Education / Q000379:methods*; D006801:Humans; D008297:Male; D012108:Research Personnel; D012572:School Health Services; D000070777:School Teachers; D012574:Schools; D012649:Self Concept; D013334:Students
keywords: Adolescence; Body image; Intervention; Schools; Task-shifting