Table 1.

Baseline clinical features of the study population

Variable
Mean age ± SD, years	68.1±15
Male sex, n (%)	22 (55)
Positive score, n (%)	40 (0.9)
High likelihood of choledocholithiasis	31 (77.5)
Intermediate likelihood of choledocholithiasis	9 (22.5)
Confirmed choledocholithiasis	18 (45)
High likelihood	16 (88.8)
Intermediate likelihood	2 (11.1)