Research Article

Different Types of Periampullary Duodenal Diverticula Are Associated with Occurrence and Recurrence of Bile Duct Stones: A Case-Control Study from a Chinese Center

Table 3

Univariate analysis of the risk factors for recurrence of symptomatic CBD stones.

Recurrence group ()Nonrecurrence group () value

Median age (yr) (range)62.5 (44–78)61 (27–90)0.360
Gender: (%)
 Male18 (56.3)131 (48.7)0.419
 Female14 (43.8)138 (51.3)
CBD diameter (mean ± SD, mm)14.5 ± 4.614.3 ± 8.30.957
CBD stone size (mean ± SD, mm)11.5 ± 6.411.5 ± 7.10.984
CBD stone number: (%)
 18 (25.0)93 (34.6)0.278
224 (75.0)176 (65.4)
PAD: (%)18 (56.3)79 (29.4)0.002
 Type 16 (18.8)7 (2.6)
 Type 2 + type 312 (37.5)72 (26.8)
Prior cholecystectomy: (%)25 (78.1)141 (52.4)0.006
ERCP attempt: (%)
 126 (81.2)239 (88.8)0.211
26 (18.8)30 (11.2)
Lithotripsy: (%)6 (18.8)37 (13.8)0.445
EST: (%)22 (68.8)214 (79.6)0.160
EPBD: (%)24 (75.0)221 (82.2)0.325
Successful cannulation: (%)31 (88.1)256 (93.4)0.665

Student’s -test for continuous variables and Pearson’s chi-square test for categorical variables.
CBD: common bile duct; EST: endoscopic sphincterotomy; EPBD: endoscopic papillary balloon dilation.