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. 2016 Aug 30;18(11):922–928. doi: 10.1016/j.hpb.2016.07.015

Table 5.

Conversion from laparoscopic to open cholecystectomy (CLOC) risk score

Points
Age
 <30 0
 30–39 2
 40–69 3
 70+ 5
Gender
 Female 0
 Male 1
Indication
 Colic/Pancreatitis 0
 Cholecystitis 2
 CBD Stone 3
ASA
 1 0
 2 2
 3+ 3
Gallbladder wall
 Normal 0
 Thick walled 1
CBD diameter
 Normal 0
 Dilated 1

ASA – American Society of Anesthesiologists physical status classification system.

CBD – common bile duct.