Table 5 Factors of adverse events: univariate analysis

Age

–

–

0.996 (0.964, 1.028)

Male gender

25

64

1.693 (0.622, 4.605)

Prior cholecystectomy

11

29

1.157 (0.490, 2.729)

Roux-en-Y reconstruction

3

8

1.098 (0.272, 4.429)

Malignant biliary obstruction

7

16

1.349 (0.496, 3.668)

Without CBD stones

12

35

0.992 (0.429, 2.294)

Not first time ERCP attempt

6

31

0.457 (0.169, 1.231)

CBD stone diameter ≥ 15 mm

4

5

2.519 (0.631, 10.053)

Cannulation with difficulty or failure

6

12

1.560 (0.531, 4.587)

Multiple cannulation attempts

5

5

3.269 (0.878, 12.178)

Pancreatic deep wire pass

4

9

1.333 (0.380, 4.681)

Endoscopic sphincterotomy

2

7

0.818 (0.161, 4.163)

Needle-knife precut

2

6

0.966 (0.184, 5.053)

Endoscopic papillary balloon dilation

22

44

2.556 (1.061, 6.154)

Endoscopic papillary large balloon dilation (diameter > 10 mm)

13

26

1.778 (0.762, 4.145)

Endoscopic nasobiliary drainage

18

46

1.324 (0.581, 3.021)

Endoscopic retrograde biliary drainage

6

8

2.460 (0.779, 7.764)

Endoscopic retrograde pancreatic drainage

1

6

0.467 (0.054, 4.037)

Endoscopic metal biliary endoprosthesis

5

12

1.250 (0.402, 3.884)

Biopsy in the bile duct or papilla

3

1

9.536 (0.953, 95.366)

Mechanical lithotripsy use

4

2

6.519 (1.131, 37.560)

Stone balloon catheter

17

39

1.588 (0.699, 3.609)

Stone retrieval basket

19

42

1.810 (0.787, 4.162)

Intraductal-ultra sonography

2

3

2.000 (0.318, 12.567)

Presence of diverticulum

5

14

1.044 (0.343, 3.180)

Presence of a native papilla

26

71

1.392 (0.471, 4.109)

With a transparent hood

22

56

1.484 (0.613, 3.596)