Table 2.

Pooled data about non-operation related risk factors.

	Number of articles	OR	95% CI	P	I2(%)	P H
Age	10	1.35	0.72–2.52	0.350	53	0.030
Gender	16	1.08	0.87–1.35	0.480	0	0.900
BMI	6	2.19	1.35–3.56	0.001	6	0.380
Malignant pathology	15	0.89	0.70–1.12	0.310	28	0.150
Octreotide therapy	5	1.07	0.58–1.99	0.820	51	0.080
History of diabetes	9	0.82	0.59–1.13	0.210	33	0.150
History of chronic pancreatitis	4	1.08	0.45–2.26	0.860	64	0.004
Preoperative serum albumin levels	3	0.51	0.20–1.31	0.160	0	0.980