2.4. Methodological Quality

The quality of the included studies was appraised using the PEDro checklist. The PEDro checklist has 11 items that evaluate various methodological aspects [18]. These include randomization, blinding, allocation concealment, data reporting, attrition, and inclusion criteria. The answers to all items on the checklist are binary (“yes” or “no”), where only the “yes” answer is associated with a point. The first item does not contribute to the summary score and therefore, the maximum number of points on the checklist is 10. Based on the summary scores, studies were classified as poor, fair, good, or excellent quality if they scored ≤3 points, 4–5 points, 6–8 points, and 9–10 points, respectively [19].