Systematic Reviews
Copyright ©The Author(s) 2024.
World J Gastrointest Oncol. Apr 15, 2024; 16(4): 1578-1595
Published online Apr 15, 2024. doi: 10.4251/wjgo.v16.i4.1578
Table 3 Risk of bias assessment scores based on the Newcastle-Ottawa Scale of studies
Ref.Selection of cohorts
Comparability of cohorts
Outcome
Representativeness of the exposed cohort
Selection of the non-exposed cohort
Ascertainment of exposure
Demonstration that outcome of interest was not present at start of study
Comparability of cohorts on the basis of the design or analysis
Assessment of outcome
Was follow up long enough for outcomes to occur
Adequacy of follow up of cohorts
Akutsu et al[21], 2011☆☆
Berezowska et al[22], 2013☆☆
Berg et al[23], 2011☆☆
Doak et al[24], 2004☆☆
Faried et al[25], 2004
Huang et al[26], 2014☆☆
Iqbal et al[27], 2016☆☆
Kawanishi et al[28], 1999☆☆
Liao et al[29], 2015☆☆
Luz et al[30], 2017☆☆
Lv et al[31], 2022☆☆
Miyazaki et al[32], 2005☆☆
Nakajima et al[33], 2002☆☆
Nakajima et al[34], 2009☆☆
Noguchi et al[35], 2002☆☆
Ou et al[36], 2014☆☆
Söderström et al[37], 2019☆☆
Tsukao et al[38], 2017☆☆
Wang et al[39], 2007☆☆
Wang et al[40], 2010☆☆
Wen et al[41], 2013☆☆
Xue et al[42], 2014☆☆
Yu et al[43], 2015☆☆
Zhang et al[44], 2013☆☆
Zhang et al[45], 2017☆☆
Zhang et al[46], 2020☆☆
Zhao et al[47], 2015☆☆