Table 1.
Risk of bias among randomized clinical trial
| Study | Risk of biasa | ||||||
|---|---|---|---|---|---|---|---|
| In randomization process | Due to effect of assignment and intervention | Due to effect of adhering to intervention | Due to missing outcome data | In measurement of the outcome | Due to selection of reported result | Due to overall risk | |
| Reeves [35]/1999 | Low | Low | Low | Low | Low | Low | Unclear |
| Busund [36]/2002 | Low | Low | Low | Low | Low | High | High |
| Faquhia [49]/2021 | Low | Low | Low | Low | Low | Low | Low |
| Weng [50]/2021 | Low | Low | Low | Low | Low | Low | Low |
| Stahl [51]/2022 | Low | Low | Low | Low | Low | Low | Low |
aRisk of Bias was assessed using the Cochrane Risk of Bias 2 tool