Table 2 Assessment of methodological quality of included studies
Study | Random allocation | Hidden distribution | Blind method | Incomplete Outcome Data | Selective reporting of results | Other bias | Quality grade |
|---|---|---|---|---|---|---|---|
K.-Y. Ho 2010 | Randomized | No clear | Double-blind | Low | Low | Low | B |
Jacques T. YaDeau 2016 | Randomized | No clear | Triple-blind | Low | Low | Low | A |
In Jun Koh 2019 | Randomized | No clear | Triple-blind | Low | Low | Low | A |
Man Soo Kim 2021 | Randomized | No clear | Double-blind | Low | Low | Low | B |
Hao Li 2021 | Randomized | No clear | Double-blind | Low | Low | Low | B |
Zi-chuan Ding 2022 | Randomized | No clear | Double-blind | Low | Low | Low | B |
Jacques T. YaDeau 2022 | Randomized | No clear | Triple-blind | Low | Low | Low | A |
Ming cheng Yuan 2022 | Randomized | No clear | Double-blind | Low | Low | Low | B |