Table 1

Eligibility criteria
Inclusion criteria Exclusion criteria
Population: children undertaking primary education aged between 4 and 11 years Population: people outside the specified age range and animal models
Intervention: diet or physical activity related school policies either alone or as part of intervention programmes Intervention: policy components which are insufficiently described to enable replication.
Outcome: body mass index (using valid reference curves to define overweight and obesity), body mass index z-score or standard deviation score, percentage of body fat, waist circumference, waist-to-hip ratio, waist-to-height ratio, skin pinch/skin fold thickness Outcome: change in diet, physical activity or knowledge
Context: primary school or equivalent Context: clinical settings
Study design: any experimental or observational study design (randomised controlled trial, controlled before and after study, interrupted time series, cohort study or cross-sectional study) Study design: narrative reviews, editorials, opinions and letters, reports published as meeting abstracts only (where insufficient methodological details are reported to allow critical appraisal of study quality)
Follow-up: ≥6 months [21] Follow-up: <6 months

Williams et al.

Williams et al. International Journal of Behavioral Nutrition and Physical Activity 2013 10:101   doi:10.1186/1479-5868-10-101

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