Table 4 NOS assessment for case–control and cross-sectional studies
NEWCASTLE—OTTAWA QUALITY ASSESSMENT SCALE | |||||
|---|---|---|---|---|---|
Author | Selection | Comparability | Exposure | Total score | Quality grade |
Nielsen et al. (2011) [28] | 2 | 1 | 3 | 6 | moderate |
Harris et al. (2016a) [25] | 1 | 2 | 3 | 7 | high |
Lin et al. (2020) [26] | 4 | 1 | 2 | 7 | high |
Fan et al. (2021) [24] | 4 | 2 | 3 | 9 | high |
Merlino et al. (2003) [33] | 4 | 2 | 3 | 9 | high |
Chen et al. (2020) | 4 | 1 | 2 | 7 | high |
Xue et al. (2020) | 4 | 2 | 3 | 9 | high |
Chao et al. (2022) [35] | 3 | 2 | 2 | 7 | high |
Matorras et al. (2007) [27] | 3 | 1 | 3 | 7 | high |
Porpora et al. (2019) | 2 | 1 | 3 | 6 | moderate |
Yoshii et al. (2021) | 2 | 2 | 2 | 6 | moderate |