Table 2 Demographic data on the patients under study

Total (n = 290)

DG (n = 131)

PG (n = 159)

Statistic

P value

Age (years)

Mean ± SD (range)

62.21 ± 9.41 (24‑80)

62.21 ± 9.60 (24‑80)

62.2 ± 9.30 (28‑80)

t = 0.007

0.994

≥ 70, n (%)

63 (21.72%)

29 (22.14%)

34 (21.38%)

χ² = 0.024

0.877

< 70, n (%)

227 (78.28%)

102 (77.86%)

125 (78.62%)

Sex

Male, n (%)

185 (63.79%)

82 (62.60%)

103 (64.78%)

χ² = 0.148

0.700

Female, n (%)

105 (36.21%)

49 (37.40%)

56 (35.22%)

BMI (kg/m²)

Mean ± SD

22.72 ± 3.02

22.52 ± 2.65

22.86 ± 3.25

t = 0.862

0.389

ASA score

I

22 (7.59%)

10 (7.63%)

12 (7.55%)

χ² = 17.810

< 0.001

II

237 (81.72%)

118 (90.08%)

119 (74.84%)

III‑IV

31 (10.69%)

3 (2.29%)

28 (17.61%)

Medical history

Hepatolithiasis

12

2

10

χ² = 1.752

0.636*

Cholecystolithiasis

29

11

18

HBP

50

17

33

Diabetes

26

8

18

Obstruction site

Proximal

172

82

90

χ² = 1.068

0.301

Distal

118

49

69

Histopathological diagnosis

iCCA

4

3

1

χ² = 4.187

0.664*

GBC

14

8

6

pCCA

153

71

82

Biliary carcinoma

51

21

30

Ampullary carcinoma

47

21

26

PDAC

20

7

13

Hepatocellular carcinoma

1

0

1