Table 2. Risk of Bias Among Randomized Clinical Trials.
| Source | Risk of biasa | |||||
|---|---|---|---|---|---|---|
| Randomization process | Deviations from intended interventions | Missing outcome data | Measurement of the outcome | Selection of the reported result | Overall | |
| Shakur et al,2 2010 | Low | Low | Low | Low | Low | Low |
| Guyette et al,3 2020 | Low | Low | Low | Low | Some concerns | Some concerns |
| Rowell et al,4 2020 | Low | Low | Low | Low | Some concerns | Some concerns |
| CRASH-3 trial collaborators,13 2019 | Low | Low | Low | Low | Low | Low |
| Chakroun-Walha et al,14 2019 | Low | Some concerns | Low | Low | Some concerns | Some concerns |
| Yutthakasemsunt et al,15 2013 | Low | Low | Low | Low | Some concerns | Some concerns |