Meta-Analysis
Copyright ©The Author(s) 2015.
World J Gastroenterol. May 7, 2015; 21(17): 5393-5406
Published online May 7, 2015. doi: 10.3748/wjg.v21.i17.5393
Table 1 Characteristics and quality of the studies
Ref.CountryPublish YearStudy PeriodApproachScopyFollow upDesignQuality assessment
Bulian et al[23,27]Germany20132008-2010V + ARigid instruments1.04-3.14 yrProspectiveGood
Solomon et al[28]United States20122009-2010V + AFlexible endoscope1 moProspectiveFair
Santos et al[29]United States20122009-2010V + AFlexible endoscope3 moProspectiveFair
Noguera et al[24]Spain20122009-2010V + AFlexible endoscope13-20 moRCTGood
Borchert et al[30]Germany20122007-2009V + ARigid instruments1 moProspectiveGood
Zornig et al[31]Germany20112007-2009V + ARigid instruments3-10 moRetrospectiveGood
Niu et al[32]China20112009-2010V + AFlexible endoscope2-11 moRetrospectiveGood
Kilian et al[33]Germany20112008-2009V + ARigid instrumentsNullProspectiveFair
Hensel et al[34]Germany20112010-2010V + ARigid instruments3 moProspectiveFair
Table 2 Demographic characteristics of studies
Ref.SampleASAAge (yr)
BMI (kg/m2)
Abdominal operative history
TVCCLCTVCCLCTVCCLC
Bulian et al[23]5050NSD46.348.826.728.74628
Bulian et al[27]5050NSD46.348.826.728.74628
Solomon et al[28]1411NA33.5 ± 335.5 ± 4.128.8 ± 1.531.4 ± 2.200
Santos et al[29]77NSD38 ± 634 ± 1229 ± 527 ± 528.642.8
Noguera et al[24]2020NSD40.647.227.527.4NANA
Borchert et al[30]8481NSD52.9 ± 12.654.7 ± 15.227.1 ± 4.927.8 ± 5.665.563
Zornig et al[31]100100NA495026263554
Niu et al[32]4348NA47.2 ± 9.6NA21.5 ± 6.2NANANA
Kilian et al[33]1520NSD50.7 ± 12.455 ± 1425.5 ± 2.524.7 ± 3.213.310
Hensel et al[34]3030NSD5456272846.740