Table 2 Methodological quality of included studies (Newcastle-Ottawa Scale)
Author, year | Selection | Comparability | Outcome | |||||
|---|---|---|---|---|---|---|---|---|
Representativeness of the exposed cohort | Selection of the non-exposed cohort | Ascertainment of exposure | Outcome of interest not present at start of study | Assessment of outcome | Adequacy of duration of follow-up | Adequacy of completeness of follow-up | ||
Yamaguchi et al. [24] | √ | √ | √ | ‡ | ‡ | √ | N/A | N/A |
Hudson et al. [25] | √ | √ | ‡ | √ | √ | ‡ | N/A | N/A |
Radic et al. [26] | √ | √ | √ | ‡ | √ | √ | N/A | N/A |