Microbial Profiles and Risk Factors of Preexisting Biliary Infection in Patients with Therapeutic Endoscopy

Table 1

Baseline demographics and endoscopic features of enrolled patients.

Study population	956
Mean age (years, s.d.)	58.4±15.0
Females (%)	38.70%
Benign diseases	835 (87.3%)
Malignant diseases	121 (12.7%)
Endoscopic diagnoses
Normal cholangiopancreatography	21 (2.2%)
Cholelithiasis	694 (72.6%)
Malignant strictures	121 (12.7%)
Benign strictures	58 (6.1%)
Bile duct expansions for unknown reasons	39 (4.1%)
Pancreatic disorders	5 (0.5%)
Clonorchiasis	9 (0.9%)
Other diseases	9 (0.9%)