Table 1 Univariate Analysis of Risk factors for BRCP patients between two groups

Gender

(Male/Female)

10/22

39/33

Age (Year)

57.3 ± 10.8

64.4 ± 9.2

BMI (kg/m²)

23.3 (22.2, 26.9)

22.9 (20.6, 24.5)

Preoperative leucocytes

(×10⁹ /L)

5.7 (4.6, 7.5)

5.4 (4.5, 6.6)

Preoperative neutrophil percent

(%)

64.1 ± 9.7

62.9 ± 8.4

Preoperative albumin

(g/L)

38.9 ± 6.6

37.3 ± 4.4

Preoperative AST

(U/L)

39.0 (19.8, 131.8)

33.0 (18.3, 75.5)

Preoperative ALT

(U/L)

76.0 (29.3, 182.3)

28.5 (17.0, 75.5)

Preoperative total bilirubin (umol/L)

32.2 (11.4, 137.3)

14.8 (9.7, 118.8)

Preoperative direct bilirubin (umol/L)

24.4(5.0, 124.3)

6.8(3.2 98.9)

Preoperative GGT

(U/L)

278.5 (25.3, 493.5)

129.0 (19.0, 47.3)

Preoperative CEA

(ng/ml)

2.1 (1.8, 4.4)

2.8 (1.6, 5.8)

Preoperative CA19-9

(U/ml)

158.5 (45.1, 525.2)

288.7 (38.2, 1109.5)

Preoperative drainage for jaundice

(Yes/No)

4/28

15/57

Tumor size

(cm)

3.0 (2.5, 4.0)

4.0 (3.0, 5.0)

Tumor location of pancreas

(Head and Neck/Body and Tail)

31/1

66/6

Portal vein confluence invasion

(Yes/No)

11/21

31/41

Vascular invasion length

(cm)

2.1 (1.7, 2.2)

3.2 (2.2, 4.3)

Vascular invasion angle (°)

129.2 (98.4, 239.1)

135.7 (111.2, 261.8)

Vascular morphological malformation (Yes/No)

9/23

40/32

Vascular lumen occlusion

(Yes/No)

7/25

16/56

local lymphadenopathy

(Yes/No)

8/24

40/32