Study endpoints
The outcomes of each study are detailed in Supplemental Table 3. The
main findings of the studies are summarised in Supplemental Tables 4.1,
5.1, 6.1, 7.1, 8.1 and 9.1. Visual inspection of the funnel plots for
the main and secondary outcomes of interest as well as the
non-statistically significant Egger’s test for each suggested the
absence of publication bias in our study (Supplemental Figures 4.5, 5.5,
6.5, 7.5, 8.5 and 9.5).