Table 1 Patient characteristics before propensity score matching

Sex

Female

33(35.9%)

21(41.2%)

0.531

Male

59(64.1%)

30(58.8%)

Age (years)

61(13)

65(10)

0.053

BMI (kg/m²)

22.0(20.3–24.4)

21.3(19.6–22.9)

0.150

Hypertension

26(28.3%)

12(23.5%)

0.540

Diabetes

15(16.3%)

4(7.8%)

0.153

Primary disease

Pancreatic ductal adenocarcinoma

41(44.6%)

27(52.9%)

Ampullary carcinoma

14(15.2%)

9(17.6%)

Adenocarcinoma of the duodenum

22(23.9%)

8(15.7%)

0.737

Cholangiocarcinoma

12(13.0%)

5(9.8%)

Chronic pancreatitis

3(3.3%)

2(3.9%)

Liver function

ALT (U/L)

83(32–187)

117(28–235)

0.307

AST (U/L)

54(27–122)

68(23–179)

0.479

TBIL (umol/L)

58.9(10.1–161.9)

69.0(13.6–174.2)

0.574

ALB (g/L)

37.9(35.1–40.7)

38.6(34.2–42.9)

0.465

Tumor markers

CA-199(U/mL)

54.59(14.79–318.0)

108.90(14.71–438.0)

0.387

CA-125(U/mL)

17.35(10.98–28.68)

21.70(9.38–34.40)

0.606

CEA (ng/mL)

1.95(0.97–2.96)

2.51(1.47–4.21)

0.028

Pancreatic CT value (Hu)

37(31–42)

34(29–39)

0.026

Main pancreatic diameter(mm)

3.51(2.53–4.78)

3.91(2.50–5.30)

0.572

ASA classification

I

1(1.1%)

0

0.447

II

45(48.9%)

20(39.2%)

III

45(48.9%)

31(60.8%)

IV

1(1.1%)

0