Forest plot.

Abstract

Note: Where applicable, the number of participants was adjusted by dividing the total number of participants by the number of measures and/or interventions administered to the same group of participants (denoted (i) to (vi); see ([10]). This adjustment does not affect the total number of participants. Note that, while study-level confidence intervals are wider when adjustments are made, estimates of central tendency (i.e., standardised mean difference) are unaffected.</p