Duration of N1 sleep is a factor for excessive daytime sleepiness in epilepsy patients with interictal epileptiform discharges: A polysomnographic study.

Although the results of our study were not statistically significant, the difference in median R sleep duration between the EDS (44.5 [16.5–63.5] min) and no-EDS group (61.3 [38.5–82.6] min) had a P value of 0.056 (borderline significance), which could be attributed to the small sample size.

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