| Study | Risk of bias | ||||||
| Random sequence generation | Allocation concealment | Blinding of participants and personnel | Blinding of outcomes assessment | Incomplete outcome data | Selective reporting | Other bias | |
| Maharjan et al. (2021) | Low risk | Low risk | Low risk | Low risk | Low risk | Unclear risk | Unclear risk |
| Haonga et al. (2019) | Low risk | Low risk | Low risk | Unclear risk | Low risk | Low risk | Low risk |
| Sathis (2017) | Low risk | Low risk | Low risk | Unclear risk | Unclear risk | Low risk | Low risk |