Research questionWhat is known about the barriers to, and facilitators of, fruit and vegetable intake among children aged 4-10 years?Synthesis of quantitative and qualitative studies Controlled trials 1. Application of inclusion criteria 2. Quality assessment (n=33) 3. Data extraction 4. Quantitative synthesis (n=21) Qualitative trials 1. Application of inclusion criteria 2. Quality assessment (n=8) 3. Data extraction 4. Quantitative synthesis (n=8) Fig 1 Stages of the review Evidence for Policy
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