Figure 2

Quality assessment of the included studies by CASP tool. Summary review of the qualitative assessment of the included studies by using CASP tools for randomised controlled trials (RCTs) consisting of 11 quality criteria. Green-coded circle indicates that the study satisfactorily met the respective quality criterion, yellow-coded circle indicates that the study partially met the respective quality criterion, and the red-coded circle indicates that the study did not meet the respective quality criterion.