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Kaplan-Meier survival curve in the overall group. It estimated the probability of seizure freedom as 86% (95% confidence interval [CI] 82–90%), 75% (95% CI 70–80%), 67% (95% CI 62–72%), and 51% (95% CI 45–57%) at 1, 2, 5, and 10 years follow-up after surgery, respectively.
