Study-specific % mean difference (diamond) between active energy expenditure estimate from the activity monitor (AEE
) and total energy expenditure measure from doubly labelled water (AEE
). Each dot represents the mean difference of the respective study together with a 95% confidence interval (CI) and the size of the box represents the weight of the study in the meta-analysis. Weights are from random effects analysis. CV; coefficient of variation for AEEDLW. *Assah et al. 2009 (Actigraph Model 7164); AEEAM estimated with most frequently used Freedson and Hendelman equation, (not reported) data of % mean difference between AEEAM - AEEDLW with other data derived and previously published equations can be found in the original paper .