TABLE 1.

Clinical Characteristics of the Screening Cohort

Variables	Cases (n = 23)	Controls (n = 22)
Age, y, Mean (95% CI)	63.6 (60.3–66.9)	61.9 (58.8–64.9)
Sex
Men/Women (n)	12/11	12/10
First clinical sign
Jaundice, n (%)	17 (73.9%)
Abdominal pain, n (%)	3 (13.0%)
N.A., n (%)	3 (13.0%)
TNM stage
Stage IA–IB, n (%)	7 (30.4%)
Stage IIA–IIB, n (%)	16 (69.6%)
Tumor grade
Grade 1, n (%)	3 (13.0%)
Grade 2, n (%)	14 (60.9%)
Grade 3, n (%)	4 (17.4%)
N.A., n (%)	2 (8.7%)
Tumor size, cm
Median (range)	2.5 (1.5–7)
Survival, mo
Median (range)	21 (4–50)

N.A. indicates not available in hospital charts, TNM, tumor-node-metastasis.