Table 1: Frequency of predictors of conversion and analysis with χ2.

Predictors of conversion

Group 1:

patients who converted

from laparoscopic to

open cholecystectomy

Group 2:

patients without

LC conversion

χ2

p

Yes

No

Yes

No

n

%

n

%

n

%

n

%

Wall thickness

> 4 mm

11

31.40

24

68.60

81

24.80

246

74.90

0.70

0.3898

Double rail image

9

25.70

26

74.30

58

17.70

269

82.30

1.33

0.2433

PCR > 10 mg/l

23

65.70

12

34.30

39

11.90

288

88.10

64.44

0.0001

Leukocytes

> 10,000/mm3

25

71.40

10

28.60

43

13.10

284

86.90

70.38

0.0001

Direct bilirubin

> 2 mg/dl

4

11.40

31

88.60

10

2.50

317

99.70

5.45

0.0146

History of

ERCP

5

14.29

30

85.71

23

7.03

304

92.97

2.39

0.1269