Risk factors of acute cholecystitis after endoscopic common bile duct stone removal

Figure 1 Kaplan–Meier’s curve comparing two total bilirubin levels in relation to the development of acute cholecystitis. Patients with a total bilirubin of < 1.3 mg/dL developed acute cholecystitis more frequently than patients with a level of ≥1.3 mg/dL (P = 0.01, log-rank test).

Figure 2 Kaplan–Meier’s curve comparing two CBD diameters in relation to acute cholecystitis development. Patients with CBD diameters <11 mm developed acute cholecystitis more frequently than patients with CBD diameters of ≥11 mm (P = 0.03, log-rank test).