| Mack et al. 2015 | Gleason et al. 2018 | Sondergaard et al. 2019 | Makkar et al. 2020 |
Random sequence generation (Selection bias) |
|
|
|
|
Allocation concealment (Selection bias) |
|
|
|
|
Blinding of participants and personnel (Performance bias)* |
|
|
|
|
Blinding of outcome assessment (Detection bias) |
|
|
|
|
Incomplete outcome data (Attrition bias) |
|
|
|
|
Selective reporting (Reporting bias) |
|
|
|
|
Other sources of bias |
|
|
|
|