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Figure 2: Kaplan-Meier survival estimate plot. Kaplan-Meier analysis of patients subsequently requiring laparoscopic cholecystectomy after LSG due to symptomatic cholelithiasis. The biliary complication-free survival rates were 99.2% (95% CI, 94.4–99.9%) at 12 months, 94.4% (95% CI, 87.9–97.4%) at 18 months, and 92.2% (95% CI, 85.0–96.0%) at 24 months.