Table 2.
Methodological quality score of the included studies based on the Newcastle–Ottawa scale (NOS) tool
| Author | Year | Study Design | Selection | Comparability | Exposure/Outcome | Total Score | Risk of Bias | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Representativeness of cohort * | Selection of control cohort * | Ascertainment of exposure * | Outcome not present at start * | Comparability of cohorts ** | Assessment of outcome * | Length of follow-up * | Adequacy of follow-up * | Total score | ||||
| Lee, J. H | 2021 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Lee, C. H | 2021 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Haik | 2021 | Retrospective cohort study | * | * | * | ** | * | 6 | High | |||
| Gallois | 2021 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Chang | 2021 | Retrospective cohort study | * | * | * | ** | * | 6 | High | |||
| Catanese | 2021 | Retrospective cohort study | * | * | * | ** | * | * | 7 | Low | ||
| Yamazaki | 2020 | Retrospective cohort study | * | * | * | ** | * | 6 | High | |||
| Shimizu | 2020 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Lee, B. M | 2020 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| da Cunha | 2019 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Franzoi | 2020 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Palleschi | 2022 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Williet | 2021 | Retrospective cohort study | * | * | * | ** | * | 6 | High | |||
| Ishihara | 2016 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |
| Gu | 2017 | Retrospective cohort study | * | * | * | ** | * | 6 | High | |||
| Malik | 2021 | Retrospective cohort study | * | * | * | ** | * | * | * | 8 | Low | |