Laparoscopic versus open gastrectomy for gastric cancer

Table 2 Subgroup analysis of laparoscopic versus open gastrectomy stratified by different tumor stage

Outcome	Studies	Participants	Heterogeneity		Model	WMD, RR, or HR	95% CI	P
Outcome	Studies	Participants	I²	P	Model	WMD, RR, or HR	95% CI	P
Lymph nodes harvested
1. EGC	5	206	79%	< 0.001	Random	− 2.02	[− 5.76, 1.72]	0.29
2. AGC	6	2219	0	0.49	Fixed	− 0.51	[− 1.19, 0.18]	0.15
Severe adverse complications
1. EGC	4	166	0	0.60	Fixed	0.44	[0.14, 1.39]	0.16
2. AGC	6	2219	0	0.73	Fixed	1.03	[0.62, 1.69]	0.92
Short-term recurrence
1. EGC	4	166	Totals not selected
2. AGC	0	0	Totals not selected
Long-term recurrence
1. EGC	4	166	Totals not selected
2. AGC	2	320	0	0.53	Fixed	1.05	[0.72, 1.53]	0.82
Short-term mortality
1. EGC	5	206	Totals not selected
2. AGC	5	2023	0	0.44	Fixed	2.34	[0.35, 15.70]	0.38
Long-term mortality
1. EGC	6	406	0	0.99	Fixed	0.96	[0.72, 1.27]	0.76
2. AGC	2	220	61%	0.11	Random	1.45	[0.59, 3.55]	0.42

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