For meta-analyses, immediate post-treatment data (means and standard deviations) were used for continous outcomes such as weight in kg, whereas number-of-events data were used for binary outcomes such as loss of ≥ 5% baseline body weight. The DerSimonian and Laird random-effects model
with an inverse variance method was used to generate the summary measures of effect in the form of mean difference for continuous outcomes and risk ratio (RR) for binary outcomes.16