Table 2 Newcastle–Ottawa assessment scale quality assessment
Study ID | Selection | Comparability | Exposure | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | S1 | S2 | S3 | S4 | C1 | C2 | E1a | E1b | E2 | E3 | E4 |
Berkun and colleagues [19] | * | – | * | * | * | * | – | – | – | * | – |
Chen and colleagues [20] | * | – | – | – | * | * | – | – | * | * | – |
Chen and colleagues [21] | * | * | – | * | – | – | – | – | * | * | – |
Esen and colleagues [37] | * | * | – | * | – | – | – | – | * | * | – |
Evans [22] | * | – | – | * | – | * | ** | n/a | * | * | – |
Gergely and colleagues [23] | – | – | – | – | * | * | – | – | * | * | – |
Huggins and colleagues [24] | * | – | – | * | – | – | – | – | – | * | – |
James and colleagues [13] | * | – | – | – | * | * | – | – | * | * | – |
James and colleagues [25] | * | – | – | * | * | * | – | – | * | * | – |
Kitagawa and colleagues [26] | * | – | – | – | – | – | – | – | – | * | – |
Lau and colleagues [27] | * | – | – | – | – | – | – | – | – | * | – |
Lu and colleagues [28] | * | – | – | – | * | * | – | – | * | * | – |
Marchini and colleagues [29] | – | – | – | – | – | – | – | – | – | * | – |
Newkirk and colleagues [39] | * | – | – | * | – | – | – | – | * | * | – |
Ngou and colleagues [30] | * | – | – | – | – | – | – | – | – | * | – |
Parks and colleagues [18] | * | * | * | – | * | * | ** | n/a | * | * | – |
Stratta and colleagues [31] | * | – | – | * | – | * | – | * | – | * | – |
Stevens and colleagues [32] | – | – | – | * | – | – | ** | n/a | – | * | – |
Sun and colleagues [15] | * | – | – | * | * | * | – | – | – | * | – |
Tazi and colleagues [33] | * | * | – | * | * | * | – | – | * | * | * |
Tsai and colleagues [34] | * | – | – | * | * | – | – | – | * | * | – |
Us and colleagues [38] | * | – | – | * | – | – | – | – | – | * | – |
Westgeest and colleagues [40] | * | – | – | * | – | – | – | – | – | * | – |
Yokochi and colleagues [35] | * | – | – | * | – | – | – | – | – | * | – |
Zhang and colleagues [36] | – | – | * | * | – | – | – | * | * | * | – |