TABLE 2.
Risk of bias assessment.
| Studies | Random sequence generation | Allocation concealment | Selective reporting | Other sources of bias | Blinding (participants and personnel) | Blinding (outcome assessment) | Incomplete outcome data | General risk of bias |
|---|---|---|---|---|---|---|---|---|
| Daneshi‐Maskooni et al. (2018) | L | L | L | L | L | U | L | Low |
| Cheshmeh et al. (2022) | L | L | L | L | L | U | L | Low |
| Kazemi et al. (2017) | L | L | L | L | L | U | L | Low |
| Ghazi Zahedi et al. (2021) | L | L | L | L | L | U | L | Low |
| Azimi et al. (2014) | L | U | L | L | H | U | L | Low |
| Zahedi et al. (2022) | L | L | L | U | L | U | L | Low |
| Fatemeh et al. (2017) | L | L | L | L | L | U | L | Low |
| Azimi et al. (2016) | L | U | L | L | H | U | L | Low |
Note: General Low Risk < 2 high risk, General moderate risk = 2 high risk, General high risk > 2 high risk.
Abbreviations: H, High; L, Low; M, Moderate; U, Unclear.