Table 4.
Risk of bias (ROB).
| Reference/Country | Publication Year | Random Generation of The Error Sequence (Selection Error) | Hiding the Allocation (Selection Variation) | Blinding of Participants and Staff (Biased Evaluation) | Performance Evaluation Blindness (Detection Error) | Incomplete Result Data | Selective Reporting (Reporting Error) | Other Biases | Number of Indications with Low Risk of Bias |
|---|---|---|---|---|---|---|---|---|---|
| Akhondzadeh et al. (Iran) [12] | 2001 | L | ? | L | ? | L | L | L | 5 |
| Aslanargun et al. (Turkey) [13] | 2012 | ? | ? | L | ? | L | L | L | 4 |
| Azimaraghi et al. (Iran) [14] | 2017 | L | L | L | L | L | L | L | 7 |
| Dantas et al. (Brazil) [15] | 2017 | L | L | L | L | L | L | L | 7 |
| Dimpfel et al. (Germany) [16] | 2011 | L | ? | ? | ? | L | L | L | 4 |
| Kaviani et al. (Iran) [17] | 2013 | L | ? | H | ? | L | L | L | 4 |
| Movafegh et al. (Iran) [6] | 2008 | L | L | L | L | L | L | L | 7 |
| Ngan and Conduit (Australia) [18] | 2011 | ? | L | L | L | L | L | L | 6 |
| Rokhtabnaket al. (Iran) [19] | 2017 | L | L | L | L | L | L | L | 7 |
L—low risk of bias; H—high risk of bias; ?—unclear risk of bias.