Table 2 Results of quality assessment using the Newcastle-Ottawa Scale for the retrospective cohort study
Study | Selection | Comparability | Exposure | Scores | |||||
|---|---|---|---|---|---|---|---|---|---|
Adequate definition of cases | Representativeness of the cases | Selection of controls | Definition of controls | Control for important factors | Ascertainment of exposure | Same method of ascertainment for cases and controls | Non-response rate | Scores | |
Conde´-Green 2013 [12] | ★ | ★ | ★ | ★ | ☆☆ | ★ | ★ | ☆ | 6 |
de Vries 2017 [13] | ★ | ★ | ★ | ★ | ★☆ | ★ | ★ | ☆ | 7 |
Deldar 2022 [14] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ☆ | 8 |
Diaconu 2020 [15] | ★ | ★ | ★ | ★ | ★☆ | ★ | ★ | ☆ | 7 |
Gassman 2013 [16] | ★ | ★ | ★ | ★ | ★☆ | ★ | ☆ | ☆ | 6 |
Hopkins 2020 [17] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 9 |
Leuchter 2021 [18] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ☆ | 8 |
Licari 2020 [19] | ★ | ★ | ★ | ★ | ★☆ | ★ | ★ | ☆ | 7 |
Olona 2014 [21] | ☆ | ★ | ★ | ★ | ★☆ | ★ | ☆ | ☆ | 5 |
Pauli 2013 [22] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ☆ | 8 |
Seaman 2021 [23] | ★ | ★ | ★ | ★ | ★☆ | ★ | ★ | ☆ | 7 |
Soares 2015 [24] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ☆ | 8 |
Wang 2021 [25] | ☆ | ★ | ★ | ★ | ☆☆ | ★ | ☆ | ☆ | 4 |