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 |