Table 1 Baseline study population demographics

Sex distribution: n (%)

Female

34 (48.7%)

18 (51.4%)

16 (45.7%)

0.6

Racial distribution: n (%)

White

65 (92.9%)

31 (88.6%)

34 (97.1%)

Black

1 (1.4%)

0

1 (2.9%)

–

Others

1 (1.4%)

1 (2.9%)

0

Unknown

3 (4.3%)

3 (8.6)

0

Smoking history: n (%)

Current

11 (15.7%)

7 (20%)

4 (11.4%)

0.5

Past

19 (27.1%)

10 (28.8%)

9 (25.7%)

Never

40 (57.2%)

18 (51.4%)

22 (62.9%)

Age at diagnosis

Median (IQR)

71.5 (65.2–75)

72.5 (67.0–76.5)

70.0 (62.0–74.0)

0.8

Surgical resection: n (%)

Distal pancreatectomy

11 (15.4%)

5 (14.3%)

6 (17.1%)

Pancreaticoduodenectomy

54 (77.6%)

26 (74.3%)

28 (80.0%)

Total pancreatectomy

2 (2.8%)

2 (5.7%)

0

–

Enucleation

1 (1.4%)

0

1 (2.9%)

Unknown

2 (2.8%)

2 (5.7%)

0

CA19-9 positive (≥ 37 U/mL): n (%)

13 (18.6%)

11 (31.4%)

2 (5.7%)

< 0.01

IPMN lesion size (median, IQR)^#

3.0 (1.8–3.7)

3.3 (2.5–4.3)

2.5 (1.5–3.0)

< 0.01