Table 4 Combined data about pathology related prognostic factors.

From: A meta-analysis of Prognostic factor of Pancreatic neuroendocrine neoplasms

Factor

Number of articles

OR

95% CI

P

I2(%)

G stage

6

5.43

2.46–11.99

<0.0001

2

TMN stage

4

8.56

2.00–36.71

0.004

0

Lymph node

6

2.96

1.25–7.03

0.01

93

Vascular invasion

3

1.93

1.14–3.28

0.01

47

Organ metastasis

4

4.5

2.65–7.62

<0.0001

36

Tumor size

5

1.02

1.00–1.04

0.009

0

Necrosis

2

3.58

1.86–6.89

0.0001

0