Study, year | Selection | Comparability | Exposure | Total |
Parperis et al, 202120 | 3 | 2 | 2 | 7 |
Yilmaz-Oner et al, 201534 | 3 | 1 | 2 | 6 |
Karol et al, 201329 | 3 | 1 | 2 | 6 |
Nery et al, 200714 | 3 | 2 | 2 | 7 |
Shen et al, 201315 | 3 | 1 | 1 | 5 |
Dietz et al, 202130 | 3 | 1 | 2 | 6 |
Raafat et al, 201521 | 3 | 1 | 1 | 5 |
Khedr et al, 202131 | 3 | 1 | 2 | 6 |
Chalhoub and Luggen, 202228 | 3 | 2 | 2 | 7 |
Xie et al, 201636 | 3 | 2 | 1 | 6 |
Choi et al, 201235 | 3 | 1 | 2 | 6 |
Maneeton et al, 201333 | 3 | 2 | 2 | 7 |
Liao et al, 202232 | 4 | 2 | 2 | 8 |
NOS, Newcastle–Ottawa Scale.