Stolley 1997.

Study characteristics
Methods	Study design: RCT Intervention period: 12 weeks Follow‐up (post‐intervention): nil Differences in baseline characteristics: reported Reliable outcomes: reported Protection against contamination: not possible Unit of allocation: child Unit of analysis: child
Participants	N (intervention baseline) = 32 mothers and 32 daughters N (control baseline) = 30 mothers and 33 daughters N (intervention follow‐up) = 20 mothers and 23 daughters have dietary data reported however, stated that in all 51 mothers (78%) and 54 daughters (83%) had data collected Unable to separate intervention from control figures with data provided Geographical setting: Chicago, USA Age: 7‐12 years; mean age intervention 9.9 (SD 1.3); controls 10.0 (SD 1.5) years Sex: girls only
Interventions	Set up within a community‐based tutoring programme this intervention examined the effectiveness of a culturally specific obesity‐prevention programme for low‐income, inner‐city African American, preadolescent girls and their mothers. Programme focused on adopting a low‐fat, low‐calorie diet and increased activity. Controls were offered a general health programme. Combined effects of dietary interventions and PA interventions vs control
Outcomes	Mother and daughters: body weight and height % overweight daily caloric intake, total fat gram intake, % calories from fat, saturated fat, dietary cholesterol assessed by Quick Check for Fat (QCF) and analysed with Quick Check Diet (QCD). Parental completion of a self‐report measure of parental support and role modelling around food. Process evaluation: reported
Implementation‐related factors	Theoretical basis: NR Resources for intervention implementation (e.g. funding needed or staff hours required): NR Who delivered the intervention: reported PROGRESS categories assessed at baseline: reported (occupation, gender, education, SES) PROGRESS categories analysed at outcome: NR Outcomes relating to harms/unintended effects: NR Intervention included strategies to address diversity or disadvantage: reported Economic evaluation: NR
Notes	Funding: non‐industry. This project was supported by grants from the American Heart Association of Metropolitan Chicago
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	NR
Allocation concealment (selection bias)	Unclear risk	NR but there was no baseline imbalance
Blinding (performance bias and detection bias) All outcomes	Unclear risk	NR
Incomplete outcome data (attrition bias) All outcomes	High risk	78% of mothers completed the study with a difference in weight between completers and dropouts. Thinner mothers were more likely to drop out (P < 0.05)
Selective reporting (reporting bias)	Unclear risk	Protocol or trial register not found
Other bias	Low risk	No additional threats to validity