Table 2.
Quality assessment based on the Newcastle-Ottawa scale of studies included in this meta-analysis
|
| |||||||||
| Selection | Comparability | Exposure | |||||||
| Author, year (Ref) | An adequate definition of case | Representativeness of the case | Selection of controls | Definition of controls | Control for an important factor | Assessment of exposure | The same method of ascertainment for cases and controls | Non-response rate | Score |
| Hamed et al. , 2022 (25) | – | – | 7 | ||||||
| Faeza et al. , 2023 (26) | – | – | – | 5 | |||||
| Wang et al. , 2021 (27) | – | – | 7 | ||||||
| Varli et al. , 2021 (22) | – | – | 6 | ||||||
| Ali et al. , 2021 (28) | – | 6 | |||||||
| Demir et al. , 2021 (29) | – | – | – | 5 | |||||
| Taskin et al. , 2016 (18) | – | – | 7 | ||||||
| Sahin et al. , 2015 (21) | – | – | 6 | ||||||
| Alp et al. , 2015 (15) | – | – | 7 | ||||||
| Binnetoglu et al. , 2014 (30) | – | – | 7 | ||||||
| Ademoglu et al. , 2014 (11) | - | – | – | 6 | |||||
| Deniz et al. , 2012 (9) | - | – | – | 5 | |||||