Table 1 Quality assessment of the studies included in the meta-analysis based on the Newcastle–Ottawa scale
Authors | Selection | Comparability | Outcome | Total score | |||||
|---|---|---|---|---|---|---|---|---|---|
Exposed cohort | non-exposed cohort | Ascertainment of exposure | outcome of interest | assessment of outcome | Length of follow-up | Adequacy of follow-up | |||
Aibinder et al. [3] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8(good) | |
Choi et al. [11] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 9(good) |
Gillespie et al. [9] | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8(good) |
Ladermann et al. [16] | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | 8(good) | |