Table 2.
Quality assessment of the included observational studies.
| Study (first author and year) | Study design | Selection | Comparability | Outcome/Exposure | Total score | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sur (7) | Cohort Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Vallant (8) | Cohort Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Oulego-Erroz I, 2022 | Case-control Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Mathews (22) | Cohort Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Kim (20) | Case-control Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Yu (28) | Cohort Study | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 7 |
| Lazow (21) | Case-control Study | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 7 |
| Gao, (17) | Case-control Study | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 8 |
| Tracy (26) | Cohort Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Chen (14) | Case-control Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Aliev (13) | Cohort Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Wang (27) | Cohort Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Staryszak (25) | Cohort Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Kamali (19) | Case-control Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Garbi-Goutel (18) | Case-control Study | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 7 |
| Silva (24) | Cohort Study | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 7 |
| Muchantef (23) | Case-control Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Dilli (15) | Case-control Study | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
| Faingold (16) | Case-control Study | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |