Table 2 The Newcastle-Ottawa Scale (NOS) scoring
Study(year) | Representativeness of the exposed cohort | Selection of the non-exposed cohort | Ascertainment of exposure | Outcome not present at baseline | Control for age | Control for other confounding factors | Assessment of outcome | Enough follow-up duration long | Adequacy of follow-up | Total |
|---|---|---|---|---|---|---|---|---|---|---|
Shiiba et al. (2009) [18] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Hasegawa et al. (2015) [19] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Booka et al. (2016) [20] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Choi et al. (2017) [27] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Zhang et al. (2019) [24] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
Wang et al. (2019) [25] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
Ishibashi-Kanno et al. (2020) [12] | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
Densky et al. (2019) [30] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Makiguchi et al. (2020) [21] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
Kong et al. (2021) [26] | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 7 |
Takahashi et al. (2021) [22] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
Kinoshita et al. (2021) [23] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
Taxis et al. (2022) [15] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
Obermeier et al. (2022) [29] | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
Kim et al. (2022) [28] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Kolk et al. (2022) [5] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |