Table 1.

Clinical characteristics of enrolled patients

	GSE133684			External validation samples
	NC	CP	PDAC	NC	CP	PDAC
Number	117	100	284	27	40	44
Age Range (y)	41-91	8-78	31-84	50-73	30-89	20-89
Gender
Male	71	73	167	12	26	22
Female	46	27	117	15	14	22
Serum CA19-9(U/ml)	NA	2-1200	0.6-1200	NA	0.8-673.9	0.8-1972
Clinical Stage
I			59			10
II			77			13
III			42			7
IV			106			11