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

BMC Surgery

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

Outcomes	No. of studies	Sample size		Heterogeneity (P, I ²)	Overall effect size	95% CI of overall effect	P
Outcomes	No. of studies	LG	RG	Heterogeneity (P, I ²)	Overall effect size	95% CI of overall effect	P
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

ISSN: 1471-2482