Table 3.
Assessment of risk of bias (RCT).
| study | 1 | 2 | 3 | 4 | 5 | 6 | 7 | Jadad score |
|---|---|---|---|---|---|---|---|---|
| Lertkhachonsuk A 2009 (10) | Y | Y | unclear | unclear | unclear | Y | Y | 4 |
| Gilani MM 2005 (14) | unclear | Y | unclear | unclear | unclear | Y | Y | 3 |
| Mousavi A 2012 (16) | unclear | Y | unclear | unclear | unclear | Y | Y | 3 |
| Shahbazian N 2014 (17) | unclear | Y | unclear | unclear | unclear | Y | Y | 3 |
| Kang HL 2019 (20) | Y | Y | unclear | unclear | unclear | Y | Y | 4 |
| Yarandi F 2016 (21) | Y | Y | Y | Y | unclear | Y | Y | 6 |
| Osborne RJ 2011 (23) | Y | Y | unclear | unclear | unclear | Y | Y | 4 |
| Yarandi F 2008 (24) | unclear | Y | unclear | unclear | unclear | Y | Y | 3 |
| Anfinan N.M 2020 (33) | Y | Y | unclear | unclear | unclear | Y | Y | 4 |
1. random sequence generation, 2. allocation concealment, 3. blinding of participants and personnel, 4. blinding of outcome assessment, 5. incomplete outcome data, 6. selective reporting, 7. other bias.