Epidemiology

In the US, the incidence of SE ranges from about 10 to 41 cases per 100,000 people per year.[8][9] Racial disparities exist in the incidence of SE, with a higher incidence in black people than white people.[8][10] 

Some studies show that SE is more common in males than in females.[10] Although SE can occur at any age, its temporal distribution is bimodal, affecting extremes of age, with higher incidence <10 years of life and >50 years.[8]

SE can equally occur in patients with an established diagnosis of epilepsy or as the first unprovoked seizure in patients with no known history of epilepsy. In patients with epilepsy, SE is more likely to occur in those with refractory seizures of focal onset, whether or not there is known structural etiology.[11]

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