Table 3.

Clinical characteristics of the patients.

Clinicopathologic factors	n	Responsive	Non-responsive	P-value
Age				0.519
<60 years	24	11	13
≥60 years	16	9	7
Sex				0.256
Male	31	14	17
Female	9	6	3
Tumor location				0.376
Head	34	18	16
Body/tail	6	2	4
Serum CA19-9				0.633
≤37 U/mL	5	3	2
>37 U/mL	35	17	18
Number of metastatic lesions				0.376
1	6	2	4
≥2	34	18	16
Karnofsky performance status score				0.248
100	7	4	3
90	8	3	5
80	19	10	9
70	3	2	1
50–60	3	1	2