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. 2019 Jul 23;2019(7):CD001871. doi: 10.1002/14651858.CD001871.pub4
Comparison/subgroup Number of RCTs Pooled effect sizes not adjusted Pooled effect sizes adjusted with ICC 0.04a
    MD (IV, random, 95% CI) MD (IV, random, 95% CI)
Physical activity interventions vs control ‐ setting 1 −0.20 (−0.30 to −0.10) No change to datab
· School 1 −0.20 (−0.30 to −0.10) No change to datab
Duration 1 −0.20 (−0.30 to −0.10) No change to datab
Duration of intervention ≤ 12 months 1 −0.20 (−0.30 to −0.10) No change to datab
DPA vs control ‐ setting 6 0.01 (−0.05 to 0.07) No change to datab
· Home 1 0.06 (−0.13 to 0.26) No change to datab
· School 5 0.00 (−0.06 to 0.06) No change to datab
Duration 6 0.01 (−0.05 to 0.07) No change to datab
· Duration of intervention ≤ 12 months 3 −0.09 (−0.18 to 0.00) No change to datab
· Duration of intervention > 12 months 3 0.01 (−0.02 to 0.04) No change to datab
CI: confidence interval; ICC: intracluster correlation coefficient; IV: generic inverse variance; MD: mean difference; Random: random‐effects model; RCT: randomised controlled trial; zBMI: body‐mass index z score