![]() ![]() However, there is moderate‐certainty evidence that they had little or no effect on zBMI (MD −0.02, 95% CI −0.06 to 0.02). Neither diet (moderate‐certainty evidence) nor physical activity interventions alone (high‐certainty evidence) compared with control reduced BMI (physical activity alone: MD −0.22 kg/m 2, 95% CI −0.44 to 0.01) or zBMI (diet alone: MD −0.14, 95% CI −0.32 to 0.04 physical activity alone: MD 0.01, 95% CI −0.10 to 0.13) in children aged 0‐5 years.Ĭhildren aged 6 to 12 years: There is moderate‐certainty evidence from 14 RCTs (n = 16,410) that physical activity interventions, compared with control, reduced BMI (MD −0.10 kg/m 2, 95% CI −0.14 to −0.05). The majority (85) targeted children aged 6 to 12 years.Ĭhildren aged 0‐5 years: There is moderate‐certainty evidence from 16 RCTs (n = 6261) that diet combined with physical activity interventions, compared with control, reduced BMI (mean difference (MD) −0.07 kg/m 2, 95% confidence interval (CI) −0.14 to −0.01), and had a similar effect (11 RCTs, n = 5536) on zBMI (MD −0.11, 95% CI −0.21 to 0.01). ![]() Thirteen studies were based in upper‐middle‐income countries (UMIC: Brazil, Ecuador, Lebanon, Mexico, Thailand, Turkey, US‐Mexico border), and one was based in a lower middle‐income country (LMIC: Egypt). We included 153 RCTs, mostly from the USA or Europe. ![]()
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