Additional file 6.

Funnel plots and Egger's test results assessing publication bias in the meta-analyses. Funnel plots and Egger's tests were used to identify the presence of publication bias in the meta-analyses. Publication bias could be tested for in the meta-analysis of trials reporting pedometer step-counts (steps/day) at 12 months; duration of physical activity at 12 months - continuous outcome measures; and duration of physical activity at 24 months - continuous outcome measures.

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Hobbs et al. BMC Medicine 2013 11:75   doi:10.1186/1741-7015-11-75