Systematic Reviews
Copyright ©The Author(s) 2021.
World J Gastrointest Surg. Jun 27, 2021; 13(6): 597-619
Published online Jun 27, 2021. doi: 10.4240/wjgs.v13.i6.597
Table 5 Baseline characteristics of included studies in the meta-analysis
Ref.YearCountryType of studyRecruitment periodLevel of evidence2D (%)3D (%)Male gender (%)
AGE (yr) (Mean or median)
BMI (Mean or median)
NOS
2D3D2D3D2D3D
Currò et al[37]2016ItalyProspective non randomized Single center2014-20152b252514 (53.8)12 (48.0)68 (43-75)69 (40-78)30 (24-35)31 (23-34)7
Tao et al[38]2016ChinaRetrospective Single center2014-20152b312720 (64.5)16 (59.2)55 (37-71)57 (35-74)23.9 ± 3.622.7 ± 4.27
Ji et al[34]2017ChinaRetrospective Single center2015-20172b393727 (69.2)33 (89.2)68 ± 462 ± 6NANA6
Su et al[39]2019ChinaProspective non randomized Single center2016-20182b544330 (55.6)29 (67.4)56.0 ± 10.958.3 ± 10.623.8 ± 2.924.4 ± 3.08
Zuccaro et al[40]2019ItalyProspective observational Single center2015-20182b4228NANA69.5 (49-89)69.25 (48-90)NANA4
Bracale et al[41]2020ItalyRetrospective case matched Two centers2013-20182b535328 (52.8)28 (52.8)68.6 ± 9.568.3 ± 11.726.7 ± 4.826.8 ± 4.77