Figures & data
Figure 2. Methodological quality of included studies.
Risk of bias judgments for each study (in seven domains: A = random sequence generation; B = allocation concealment;l; C = blinding of assessors; D = incomplete data; E = selective reporting; F = other bias) are illustrated to the right of the forest plots (green/+ = low risk; yellow/? = unclear risk; red/- = high risk).
![Figure 2. Methodological quality of included studies.](/cms/asset/d82f4ba2-9e32-427e-a026-c843944c9217/zept_a_1646092_f0002_oc.jpg)
Supplemental material