Table 3.

Meta-analysis comparing robot-assisted gastrectomy with laparoscopic assisted gastrectomy and/or open gastrectomy in the treatment gastric cancer

Ref.	Subject	Patients (n)			Operation time (min)1	Blood loss (mL)1	Harvested nodes (n)1	Morbidity (%)	Mortality (%)	Hospital stay (d)1
		RAG	LAG	OG
Xiong et al[56]	RAG vs LAG	268	650	-	68.772 (RAG > LAG)3	-41.882 (RAG < LAG)3	-0.712 (NS)	0.744 (NS)	1.804 (NS)	-0.542 (NS)
Liao et al[57]	RAG vs OG	520	-	5260	65.732 (RAG > LAG)3	-126.082 (RAG < LAG)3	-0.782 (NS)	0.984 (NS)	0.984 (NS)	-2.872 (RAG < LAG)3
Hyun et al[58]	RAG vs LAG RAG vs OG	634 558	1236 -	- 5301	61.992 (RAG > LAG)3 65.732 (RAG > OG)3	-6.082 (NS) -154.182 (RAG < OG)3	-0.252 (NS) -1.132 (NS)	1.124 (NS) 1.374 (NS)	NR NR	-0.602 (NS) -2.182 (RAG < OG)3
Marano et al[20]	RAG vs OG RAG vs LAG	404 404	- 845	718 -	95.832 (RAG > OG)3 63.702 (RAG > LAG)3	-225.582 (NS) -35.532 (RAG < LAG)3	-2.682 (NS) 0.502 (NS)	0.934 (NS) 0.874 (NS)	NR NR	-2.922 (RAG < OG)3 -0.602 (NS)
Xiong et al[59]	RAG vs LAG	736	1759	-	48.642 (RAG > LAG)3	-33.562 (RAG < LAG)3	1.282 (NS)	1.134 (NS)	1.664 (NS)	-1.162 (NS)
Liao et al[60]	RAG vs LAG	762	1473	-	50.02 (RAG > LAG)3	-46.972 (RAG < LAG)3	1.612 (NS)	0.884 (NS)	0.454 (NS)	-0.52 (NS)
Shen et al[61]	RAG vs LAG	506	1369	-	48.462 (RAG > LAG)3	-38.432 (RAG < LAG)3	1.062 (NS)	0.954 (NS)	NR	-1.02 (NS)
Zong et al[62]	RAG vs OG RAG vs LAG	481 997	- 2207	4674 -	68.472 (RAG > OG)3 57.152 (RAG > LAG)3	-106.632 (RAG < OG)3 -28.592 (NS)	-0.782 (NS) -0.632 (NS)	0.924 (NS) 1.064 (NS)	0.724 (NS) 1.054 (NS)	-2.492 (RAG < OG)3 -0.162 (NS)
Chuan et al[63]	RAG vs LAG	551	1245	-	42.92 (RAG > LAG)3	-16.072 (RAG < LAG)3	2.452 (NS)	1.054 (NS)	NR	-1.982 (RAG < LAG)3

¹Mean value;

²Weighted mean difference;

³Difference statistically significant, P < 0.05;

⁴Odds ratio. RAG: Robot-assisted laparoscopic gastrectomy; LAG: Laparoscopic assisted gastrectomy; OG: Open gastrectomy; NR: Not reported; NS: Not statistically significant difference.