Study | Selection | Â | Outcome | Â | |||||
---|---|---|---|---|---|---|---|---|---|
Exposed cohort | Nonexposed cohort | Ascertainment of exposure | Outcome of interest | Comparability | Assessment of outcome | Length of follow-up | Adequacy of follow-up | Total score | |
Wu et al. [23] | * | * | * | * | ** | * | * | * | 9 |
Takasaka et al. [24] | * | * | * | * | – | * | * | * | 7 |
Kline et al. [25] | * | * | * | * | ** | * | – | – | 7 |
Weber et al. [26] | * | * | * | * | ** | * | * | * | 9 |
Yeo et al. [27] | * | * | * | * | ** | * | * | * | 9 |