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Table 6 Results of the subgroup analysis of distal or total gastrectomy

From: Robotic versus laparoscopic Gastrectomy for gastric cancer: a systematic review and updated meta-analysis

Outcomes No. of studies Sample size Heterogeneity (P, I 2) Overall effect size 95% CI of overall effect P
LG RG
Operation time (min)
 DG 8 1635 453 <0.001, 78% WMD = −57.08 −68.62 ~ −45.54 <0.01
 TG 5 448 166 0.004, 74% WMD = −42.62 −66.72 ~ −18.52 <0.01
Blood loss (mL)
 DG 8 1635 453 <0.001, 77% WMD =19.27 3.86 ~ 34.68 0.01
 TG 5 448 166 0.54, 0% WMD =23.77 1.97 ~ 45.56 0.03
Time to oral intake (days)
 DG 3 344 116 0.49, 0% WMD =0.18 0.00 ~ 0.36 0.05
 TG 3 251 100 0.71, 0% WMD = −0.18 −0.55 ~ 0.20 0.36
Hospital stay (days)
 DG 8 1635 453 <0.001, 92% WMD =0.52 −0.69 ~ 1.74 0.40
 TG 5 448 166 0.75, 0% WMD =0.28 −0.80 ~ 1.36 0.61
Overall complications
 DG 8 1635 453 0.86, 0% RR =1.19 0.83 ~ 1.71 0.34
 TG 4 330 140 0.49, 0% RR =1.32 0.80 ~ 2.18 0.27
Mortality
 DG 4 942 213 0.84, 0% RR =0.84 0.21 ~ 3.30 0.80
 TG 2 194 81 0.55, 0% RR =0.15 0.02 ~ 1.41 0.10
Retrieved lymph nodes
 DG 8 1635 453 <0.001, 92% WMD = −2.10 −5.90 ~ 1.70 0.28
 TG 5 448 166 0.63, 0% WMD = −2.51 −4.83 ~ −0.19 0.03
  1. DG distal gastrectomy, TG total gastrectomy