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Long-term changes in the incidence of childhood epilepsy. A population study from Finland




TekijätMaiju M. Saarinen, Matti Sillanpää, Dieter Schmidt, Lauri J. Virta

KustantajaElsevier

Julkaisuvuosi2016

JournalEpilepsy and Behavior

Vuosikerta58

Aloitussivu81

Lopetussivu85

Sivujen määrä5

ISSN1525-5050

DOIhttps://doi.org/10.1016/j.yebeh.2016.02.040


Tiivistelmä
Background
The incidence of childhood epilepsy has changed during the past decades, but it is unclear whether it increased or decreased.Methods
Changes in drug-treated childhood epilepsy between 1968 and 2012 were evaluated using the Finnish nationwide register of all children, aged ≤ 15 years, on antiepileptic drugs (AEDs) prescribed for the treatment of epilepsy. The first registered entitlement to full-refundable AEDs was used as a proxy for newly diagnosed epilepsy. Incidence densities were calculated as ratios of annual new cases per 100,000 person-years in each calendar year during 1968 to 2012.Results
The annual incidence density of newly treated childhood epilepsy increased from 35 in the 1960s to 87 per 100,000 person-years in the 1990s and decreased thereafter to 61 per 100,000 person-years. Since 1996, the incidence density decreased 1–2% per year in children aged < 1, 1–5, or 6–10 years (all 95% confidence intervals within 0.3%–3%), while no substantial change was seen in older children.Conclusion
The incidence of drug-treated childhood epilepsy from the late 1960s to the early 1990s distinctly increased. The reasons for the increase are not fully understood but may include increasing ascertainment through improved diagnosis and a wider acceptance of AED treatment. Since the 1990s, a slight decline can be seen, probably reflecting the recent improvement in child health and safety.


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