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Analysis of risk of bias for non-randomized studies (Newcastle-Ottawa Scale).
| References | Selection | Comparison | Result/exposition | Risk of bias | |||||
|---|---|---|---|---|---|---|---|---|---|
| Adequate definition of cases | Representativeness of cases | Selection of controls | Definition of controls | According to the methodology | Verification of the exposition | Same methods for cases/controls | No response rate | ||
| Grazzi et al. (2021) | * | * | * | - | * | * | - | * | Moderate |
| Vencatachellum et al. (2021) | * | * | * | * | * | * | * | - | Low |
