TABLE 3.

Extracted data of prognosis from included studies.

Author	Cancer type	Hazard ratio	95% Confidence interval
[22]	Hepatocellular cancer	1.907	1.067–3.408
[23]	Pancreatic cancer	2.27	1.24–4.16
[8]	Gastric cancer	4.5	1.8–11.2
[9]	Gastric cancer	3.54	1.2–10.42
[13]	Gastric cancer	0.603	0.346–1.151
[20]	Pancreatic cancer	4.48	1.14–17.62
[27]	Esophageal cancer	1.281	0.776–2.114