Table 3.

Univariate analysis of factors predicting early endoscopic removal.

Factors	OR (95% CI)	p-Value
Calculus density < 1300 HU	10 (1.39–71.86)	0.032
Maximum calculus size < 10 mm	14 (1.37–142.89)	0.029
Pre-ESWL ERCP	0.4 (0.06–2.57)	0.095
Etiology of alcohol	1.12 (0.2–6.43)	0.239
PD stricture	0.74 (0.11–4.87)	0.754
PD stent placement	3.6 (0.4–32.37)	0.259

OR: Odds ratio; CI: Confidence interval; HU: Hounsfield units; pre-ESWL ET: pre-extracorporeal shock wave lithotripsy endoscopic therapy; PD stricture: pancreatic duct stricture; PD stent: pancreatic duct stent.