Table 4: Logistic regression models for the probability

of conversion to open surgery (odds ratio).

UNEME, Tijuana 2013-2017.

Variable

 

Demography

Model 1

Ultrasound

Model 2

Gender

Male

(Ref. female)

1.9*

1.13

Age

> 55

(Ref. < 55)

1.355

 

Wall thickness

> 3 mm

(Ref. < 3 mm)

 

3.228‡

Common bile duct diameter

> 6 mm

(Ref. < 6 mm)

 

3.199‡

Constant

 

0.241

0.021‡

Model 1: demographic variables, gender had a significant p < 0.05* in relation to conversion.

Model 2: ultrasonographic variables, had a significant p < 0.001‡ in relation to conversion.

Own elaboration according to data consulted.