Table 1. Patient demographics for endoscopic retrograde cholangiopancreatographies (ERCPs) requiring advanced techniques.

Parameter	n (%)
Procedures with advanced techniques	230
Age, years	49
Sex
Male	72 (31 %)
Female	158 (69 %)
Race
Hispanic	142
White	53
Black	18
Asian	16
Unknown	1
Indications
Choledocholithiasis	142 (62 %)
Pancreatic mass	19 (8 %)
Other	69 (30 %)