Table 2.

Summary statistics of pooled odds ratio on various postoperative complications comparing high body mass index and normal body mass index groups receiving laparoscopic gastrectomy

Complication variable	No. of studies	No. of pooled patients	Pooled OR	95%CI	Test of heterogeneity	Test of overall effect
					P value	P value
Overall complications	9	6077	1.12	0.95-1.33	0.734	0.169
Anastomotic leakage	6	3939	1.31	0.62-2.79	0.642	0.476
Anastomotic stricture	4	3587	0.85	0.27-2.66	0.489	0.775
Anastomotic bleeding	5	3798	0.63	0.27-1.45	0.942	0.277
Abdominal abscess	5	3801	1.56	0.91-2.67	0.615	0.103
Pancreatic leakage	6	3937	0.52	0.20-1.35	0.581	0.179
Ileus	4	3584	1.96	0.79-4.83	0.382	0.144
Wound	6	3939	1.77	0.92-3.42	0.289	0.087

OR: Odds ratio; CI: Confidence interval.