Table 1. Characteristics of 78 pancreatic ductal adenocarcinoma patients.

Characteristics	Patients frequency (%)	UCC		P-value
		Low	High
Gender	78	28	50
Male	39 (50%)	13	26	0.637
Female	39 (50%)	15	24
Age (year)
		56.82±2.43	60.62±2.17	0.271
Lymph node metastasis
Absent	46 (59%)	25	21	<0.001**
Present	32 (41%)	3	29
Distant metastasis
Absent	71 (91%)	26	45	0.672
Present	7 (9%)	2	5
Dukes’ stage
A/B	43 (55%)	24	19	<0.001**
C/D	35 (45%)	4	31

Chi-square test. ^**P<0.001.