Meta-Analysis
Copyright ©The Author(s) 2023.
World J Gastrointest Oncol. Dec 15, 2023; 15(12): 2197-2211
Published online Dec 15, 2023. doi: 10.4251/wjgo.v15.i12.2197
Table 2 The methodological quality assessment of included trials
Ref.
Random sequence generation
Allocation concealment
Blinding of participants and personnel
Blinding of outcome assessment
Incomplete outcome data
Selective reporting
Other bias
Mäkelä et al[23], 1995UnclearUnclearLow riskUnclearLow riskUnclearUnclear
Ohlsson et al[24], 1995UnclearUnclearLow riskUnclearLow riskUnclearUnclear
Kjeldsen et al[25], 1997UnclearUnclearUnclearHigh riskLow riskUnclearUnclear
Pietra et al[26], 1998UnclearUnclearLow riskUnclearHigh riskUnclearUnclear
Schoemaker et al[27], 1998Low riskHigh riskLow riskLow riskLow riskUnclearUnclear
Secco et al[28], 2002UnclearUnclearUnclearLow riskUnclearUnclearUnclear
Rodríguez-Moranta et al[29], 2006Low riskLow riskUnclearUnclearLow riskUnclearUnclear
Wattchow et al[30], 2006Low riskLow riskLow riskLow riskLow riskUnclearUnclear
Sobhani et al[31], 2008UnclearUnclearLow riskLow riskLow riskUnclearUnclear
Wang et al[32], 2009UnclearUnclearHigh riskHigh riskUnclearUnclearUnclear
Strand et al[33], 2011UnclearUnclearLow riskLow riskUnclearUnclearUnclear
Augestad et al[34], 2013UnclearLow riskLow riskLow riskLow riskUnclearUnclear
Primrose et al[35], 2014Low riskLow riskUnclearLow riskLow riskLow riskUnclear
Treasure et al[36], 2014Low riskLow riskLow riskLow riskUnclearLow riskLow risk
Rosati et al[37], 2016UnclearUnclearUnclearUnclearLow riskUnclearUnclear
Wille-Jørgensen et al[38], 2018Low riskLow riskLow riskLow riskUnclearLow riskLow risk
Rahr et al[39], 2019Low riskUnclearUnclearUnclearLow riskUnclearUnclear
Monteil et al[40], 2021UnclearUnclearUnclearLow riskLow riskUnclearUnclear