Meta-Analysis
Copyright ©The Author(s) 2022.
World J Gastrointest Surg. Dec 27, 2022; 14(12): 1387-1396
Published online Dec 27, 2022. doi: 10.4240/wjgs.v14.i12.1387
Table 1 Basic characteristics of the included studies
Ref.
Country
Type
Period
Case
Age
Sex (M/F)
Liver resection1
Quality
LS vs OS
LS
OS
LS
OS
LS
OS
Lee et al[12], 2022KoreaR2011-201820 vs 2471.85 ± 9.1168.08 ± 10.645/1511/131/4/151/13/107
Cho et al[13], 2022KoreaR (PSM)2010-201719 vs 1969.9 ± 9.166.7 ± 7.88/1112/7NANA6
Navarro et al[14], 2020KoreaR (PSM)2005-201743 vs 4366.7 ± 10.365.4 ± 7.625/1828/1538/5/023/12/86
Jang  et al[15], 2019KoreaR2004-201755 vs 4470.1 ± 8.165.5 ± 10.519/3623/2138/16/19/32/38
Itano et al[16], 2015JapanR2003-201316 vs 1468.1 ± 19.971.5 ± 13.29/75/9NANA7
Table 2 Meta-analysis results of all available studies in measured outcomes
Measured outcomes
Studies, n
Heterogeneity test
Model
RR/WMD
95%CI
P value
I2 (%)
P value
Operative time5620.03Random-41.29-75.66, -6.920.02a
Intraoperative blood loss4860.0001Random-261.96-472.60, -51.310.01a
Hospital stays5760.002Random-5.67-8.53, -2.810.0001a
Lymph nodes retrieved5790.0008Random-1.71-4.27, 0.840.19
Transfusion300.57Random0.600.31, 1.150.13
Complication500.5Random0.720.39, 1.330.29
Recurrence2500.16Random0.410.06, 2.840.36
3-yr OS3400.19Random0.990.82, 1.180.89
5-yr OS3800.006Random1.020.68, 1.530.92
3-yr DFS3290.24Random1.010.84, 1.210.93
5-yr DFS3550.11Random1.150.90, 1.460.26