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A thorough study has been carried out by Larsson et al. [1] based on nation-wide registers, which provides valuable information on the long-term retention rates of the most often prescribed antiepileptic drugs (AEDs) in post-stroke epilepsy. Computation of the retention rates was estimated by using the Kaplan-Meier (KM) methodology. The authors excluded a priori patients who died during the first two months after stroke, while patients who died during the study period (>2 months post-stroke) were censored [1].