Laparoscopic versus open approach in gastrectomy for advanced gastric cancer: a systematic review

Table 8 Analysis of postoperative morbidity

	Sample size							Heterogeneity test
Measure outcomes	No. of studies	LG	OG	OR, WMD, or HR	Lower 95% CI	Upper 95% CI	P	I² (%)	P
Over morbidity	35	79	1031	0.83	0.77	0.91	> 0.05	14.50	0.228
Specific complications
Intra-abdominal bleeding	12	23	28	0.86	0.5	1.47	> 0.05	0	0.838
Anastomotic bleed	12	14	13	1.14	0.59	2.22	> 0.05	0	0.919
Anastomotic stenosis	11	19	24	0.75	0.42	1.31	> 0.05	0	0.747
Anastomotic leakage	24	75	97	0.85	0.63	1.15	> 0.05	0	0.819
Duodenal stump leakage	13	27	29	0.93	0.56	1.52	> 0.05	0	0.845
Abdominal infection	16	56	69	0.78	0.55	1.1	> 0.05	0	0.996
Lymphatic fistula	8	16	17	0.86	0.45	1.64	> 0.05	0	0.896
General complications
Pneumonia	20	106	132	0.84	0.65	1.08	> 0.05	0	0.88
Wound problems	22	79	143	0.53	0.41	0.7	< 0.0001	3.50	0.413
Postoperative ileus	15	35	57	0.64	0.43	0.96	< 0.05	0	0.89
Pancreatitis or pancreatic leakage	14	64	42	1.42	0.98	2.05	> 0.05	0	0.935

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