Table 1. Clinical and pathologic characteristics of the OSU cohort.

	n (%)
Age, years, median (range)	63.5 (39–88)
Gender
Male	56 (60)
Female	37 (40)
pT stage
1	2 (2)
2	5 (5)
3	85 (92)
4	1 (1)
pN stage
0	17 (18)
1	76 (82)
Histologic grade
1	4 (4)
2	63 (68)
3	26 (28)
Surgical margin
Positive	21 (23)
Negative	72 (77)
Post-op CA 19-9
< 90	52 (56)
90–180	28 (30)
>180	13 (14)
Post-operative chemotherapy
N/A	4 (4)
Gemcitabine	76 (82)
Gemcitabine/Abraxane	13 (14)
Anatomic location of tumor
Head/Neck	61 (66)
Body/Tail	32 (34)