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Table 2 The quality evaluation of cohort studies

From: Left-side vs. right-side hepatectomy for hilar cholangiocarcinoma: a meta-analysis

  Methodological quality
Study Selection Comparability Outcome Quality score
Bednarsch et al. [28] 7 stars
Govil et al. [19] 6 stars
Hong et al. [29] 8 stars
Jo et al. [15] 8 stars
Lee et al. [30] 7 stars
Otto et al. [31] 7 stars
Ratti et al. [32] 7 stars
Shimizu et al. [11] 7 stars
Sugiura et al. [33] 6 stars
Konstadoulakis et al. [34] 6 stars
Yamanaka et al. [35] 7 stars