Table 1.

Univariate Analysis

Variable	Case (%)	Control (%)	P-value
Mean Age (std dev)	52.4 (15.4)	52.2 (16.1)	0.928*
Age < 60 years old	91/123 (74.0%)	187/248 (75.4%)	0.767
Female	91/123 (74.0%)	183/248 (73.8%)	0.968
Suspected SOD	49/123 (39.8%)	40/248 (16.1%)	<0.001
Pancreatic Sphincterotomy	25/123 (20.3%)	11/248 (4.4%)	<0.001
Mod./Diff. Cannulation	49/123 (39.8%)	58/248 (23.4%)	0.001
≥ 2 Pancreatic Injections	14/123 (11.4%)	10/248 (4.0%)	0.007
Pancreatic Stent Placement	32/123 (26.0%)	31/248 (12.5%)	0.001
Alcohol Use Status
Current drinker	67/120 (55.8)	56/222 (25.2)	<0.001
Former drinker	14/120 (11.7)	17/222 (7.7)	<0.001
Cigarette Smoking Status
Current smoker	16/120 (13.3)	43/222 (19.4)	<0.001
Former smoker	33/120 (27.5)	23/222 (10.3)	<0.001
Mean pack–years for smokers (std dev)	28.1 (31.4)	19.2 (19.3)	0.171†

^*Two Sample T-Test

^†Kolmogorov-Smirnov Two-Sample Test