Efficacy and safety of endoscopic papillary balloon dilation for the removal of bile duct stones: Data from a “real-life” multicenter study on Dilation-Assisted Stone Extraction

Table 1 Patients’ characteristics

Gender (male/female), n (%)	49 (40.8)/71 (59)
Age (years), mean ± SD	67.8 yr ± 15.7
Patients at 1st ERCP, n (%)	91 (75.8)
Patients previously treated with endoscopic sphincterotomy, n (%)	29 (24.2)
Ampullary/periampullary diverticulum, n (%)	37 (30.8)
Bile duct stones size (mm), mean ± SD	15.8 ± 2.9
Bile duct size (mm), mean ± SD	19.2 ± 3.9
Billroth I reconstruction, n (%)	3 (2.5)