Table 3: Univariate analysis of risk factors for post-surgical choledocholithiasis.

Risk factor p-value
Age 0.01
Gender 0.27
Pstage 0.46
Cholecystolithiasis < 0.01
Roux-en-Y (vs. Others) 0.03
Range of LN dissection 0.84
Open or laparo 0.98