Table 1.
Baseline characteristics of patients n (%)
| Variable | Total (n = 223) | PAD group (n = 93) | Non-PAD group (n = 130) | P value |
| Mean age (yr) | 72.0 ± 10.4 (39-92) | 75.2 ± 8.8 (51-92) | 69.7 ± 10.9 (39-90) | 0.000 |
| Sex (male/female) | 122:101 (54.7:45.3) | 46:47 (49.5:50.5) | 76:54 (58.5:41.5) | 0.220 |
| BMI (kg/m2) | 22.6 ± 3.1 | 22.5 ± 2.8 | 22.6 ± 3.3 | 0.947 |
| Billroth II gastrectomy | 26 (11.7) | 7 (7.5) | 19 (14.6) | 0.138 |
| Large balloon dilation | ||||
| With ES | 132 (59.2) | 59 (63.4) | 73 (56.2) | 0.334 |
| Without ES | 91 (40.8) | 34 (36.6) | 57 (43.8) | |
| Precutting with needle knife | 25 (11.2) | 9 (9.7) | 16 (12.3) | 0.668 |
| CBD stones | ||||
| Mean diameter of stone (mm) | 15.9 ± 5.8 (10-40) | 16.4 ± 6.0 (10-37) | 15.5 ± 5.7 (10-40) | 0.252 |
| Number of stones | ||||
| 1/2/≥ 3 | 119/35/68 | 49/15/29 | 70/20/39 | 0.835 |
| Types of stones | ||||
| Brown/black/cholesterol | 182/33/2 (83.9/15.2/0.9) | 82/9/0 (90.1/9.9/0) | 100/24/2 (79.4/19.0/1.6) | 0.144 |
| Mean diameter of CBD (mm) | 19.9 ± 5.3 (10-37) | 20.0 ± 5.0 (10-35) | 19.8 ± 5.4 (10-37) | 0.743 |
| Distal CBD angulation (degree) | 140.6 ± 21.9 | 142.1 ± 21.8 | 139.4 ± 22.0 | 0.444 |
| Balloon dilation | ||||
| Dilating balloon size (mm) | 15.6 ± 2.4 (12-20) | 15.5 ± 2.4 (12-20) | 15.8 ± 2.4 (12-20) | 0.374 |
| Duration of ballooning (s) | 38.3 ± 16.1(10–60) | 36.1 ± 15.0 (10–60) | 39.9 ± 16.8 (10–60) | 0.081 |
Values are presented as mean ± SD (range). PAD: Periampullary diverticula; BMI: Body mass index; ES: Endoscopic sphincterotomy; CBD: Common bile duct.