Meta-Analysis
Copyright ©The Author(s) 2024.
World J Gastrointest Surg. Feb 27, 2024; 16(2): 585-595
Published online Feb 27, 2024. doi: 10.4240/wjgs.v16.i2.585
Table 2 Results of quality assessment using the Newcastle-Ottawa Scale for cohort studies
Ref.
Selection
Comparability
Outcome
Scores
Representativeness of exposure
Selection of the non-exposure
Ascertainment of exposure
Demonstration that outcome was not present at start
Cohorts on the basis of the design or analysis
Assessment
Long follow-up for outcomes to occur
Adequacy of follow-up
Abnet et al[28], 2005★★★★★★☆★★8
Abnet et al[27], 2001☆★★★★★★★★8
Hiraki et al[19], 2008★★★★★★★☆☆7
Hujoel et al[20], 2003★★★★★★★☆☆7
Kim et al[21], 2022★★★★★★★★★9
Michaud et al[29], 2008★★★★★★★★★9
Ndegwa et al[30], 2018☆☆★★★★★★★7
Watabe et al[32], 1998☆★★★★★★☆☆6
Yano et al[33], 2021★★★★★★★★★9