Table 2 Quality assessment of the 8 randoized controlled trials for the meta-analysis
Study | Adequate random sequence generation | Allocation concealment | Blinding method | Adequate assessment of each outcome | Free of selective reporting | Modified Jadad score |
|---|---|---|---|---|---|---|
Kang (2019) | Y | U | U | Y | Y | 5 |
Yarandi (2016) | Y | Y | Y | Y | Y | 7 |
Shahbazian (2014) | U | U | U | Y | Y | 4 |
Mousavi (2012) | Y | U | U | Y | Y | 5 |
Lertkhachonsuk (2009) | Y | U | U | Y | Y | 5 |
Osborne (2011) | Y | N | Y | Y | Y | 5 |
Gilani (2005) | Y | U | U | Y | Y | 5 |
Schink (2020) | Y | U | U | Y | Y | 5 |