Aragona 1975

Methods	Randomised controlled trial with three groups.
Participants	Country: USA. Setting: other. Health problem: overweight. Recruitment: health system and adverts. Participants: girls aged 5 to 11 who were overweight (n=15).
Interventions	Contract features Form: written; Parties: practitioners‐carers; Incentives: deposit; Co‐interventions: yes. Group 1: Contracts between parents and the providers of a weight loss programme. Parents gave a monetary deposit to the programme and received money back when their children achieved an agreed weight loss. Group 2: As per group 1, but parents also contracted to facilitate their child's weight loss by carrying out reinforcement techniques. Group 3: No contracts.
Outcomes	Mean weight change (pounds) from start of treatment to end of treatment, and to 8 week follow‐up.
Notes
Risk of bias
Item	Authors' judgement	Description
Allocation concealment?	Unclear	B ‐ Unclear