Table 2.

Relationship between clinicopathological parameters and the pretreatment plasma amylase of patients with stage IV pancreatic adenocarcinoma (n = 371)

Characteristics	Amylase <20 U/l	Amylase ≥20 U/l	p-value
Age at diagnosis (years)
<65	64	76	0.435
≥65	101
Gender
Female	70	80	0.663
Male	95	97
Karnofsky index
<90	31	98	0.204
≥90	39	174
CA-19-9, U/ml
<Median	62	71	1.000
>Median	85	97
Chemotherapy
No	44	57	0.286
Yes	121	119