Table 1.

Patient characteristics.

Groups		Pancreatic cancer	Pancreatic benign disease
Patient number (n)		110	52
Age, mean (range) (year)		65 (40–91)	55 (22–81)
Gender (percentage)	Female	47 (42.7%)	27 (51.9%)
	Male	63 (57.3%)	25 (48.1%)
Clinical stage (percentage)	I	31 (27.4%)	–
	II	24 (21.2%)	–
	III	32 (29.1%)	–
	IV	20 (18.2%)	–
CA19-9, median (range) (U/ml)		175.2 (0.8–20190.0)	9.0 (0.80–317.40)
cfDNA, median (range) (ng/ml plasma)		8.38 (0.55–95.40)	7.83 (0.62–63.93)

cfDNA, cell-free DNA.