Prognostic value of preoperative enhanced computed tomography as a quantitative imaging biomarker in pancreatic cancer

Table 1 Patient characteristics, n (%)

Patient characteristics	n = 67
Age (yr)
≤ 60	31 (46.3)
> 60	36 (53.7)
Sex
Male	42 (62.7)
Female	25 (37.3)
Tumour location
Head/uncinate	44 (65.7)
Body/tail	23 (34.3)
CA19-9
< 37 ng/mL	20 (29.9)
≥ 37 ng/mL	47 (70.1)
AJCC stage (2017)
I	11 (16.4)
II	27 (40.3)
III	29 (43.3)
Tumour differentiation
Highly/moderately	49 (73.1)
Poorly/undifferentiated	18 (26.9)
Surgical margin
Negative	57 (85.1)
Positive	10 (14.9)
Vascular invasion
No	51 (76.1)
Yes	16 (23.9)
Adjuvant chemotherapy
No	33 (49.3)
Yes	34 (50.7)

CA19-9: Carbohydrate antigen 19-9; AJCC: American Joint Committee on Cancer.