Table 1. Clinical characteristics of enrolled subjects.

	Gastric cancer patients	Healthy individuals
Case (n)	51	18
Gender (male/female)	38/13	12/6
Age (years)	41 (26–53)	37 (29–52)
Helicobacter pylori infection (n)	44	6
Anemia (n)	35	1
Low platelet count (<100×109/l) (n)	19	0
TNM stage (I/II/III/IV)	12/14/18/7	Not available
Clinical type (intestinal/diffuse)	48/3	Not available

Data were shown as median and range.