Dataset Information

Prevalence, Incidence, and Recurrence of Febrile Seizures in Korean Children Based on National Registry Data.

ABSTRACT: Febrile seizures (FS) are the most common type of seizure during childhood, reportedly occurring in 2-5% of children aged 6 months to 5 years. However, there are no national data on the prevalence of FS in Korea. This study determined the prevalence, incidence, and recurrence rates of FS in Korean children using national registry data.The data were collected from the Korea National Health Insurance Review and Assessment Service for 2009-2013. Patients with febrile convulsion as their main diagnosis were enrolled. The overall prevalence of FS in more than 2 million children younger than 5 years was estimated, and the incidence and recurrence rates of FS were determined for children born in 2009.The average prevalence of FS in children younger than 5 years based on hospital visit rates in Korea was 6.92% (7.67% for boys and 6.12% for girls). The prevalence peaked in the second to third years of life, at 27.51%. The incidence of FS in children younger than 5 years (mean 4.5 years) was 5.49% (5.89% for boys and 5.06% for girls). The risk of first FS was highest in the second year of life. The overall recurrence rate was 13.04% (13.81% for boys and 12.09% for girls), and a third episode of FS occurred in 3.35%.Our study determined the overall prevalence of FS using data for the total population in Korea. The prevalence was comparable to that reported for other countries. Patients with three episodes of FS need to be monitored carefully.

SUBMITTER: Byeon JH

PROVIDER: S-EPMC5765255 | biostudies-other | 2018 Jan

REPOSITORIES: biostudies-other

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Prevalence, Incidence, and Recurrence of Febrile Seizures in Korean Children Based on National Registry Data.

Byeon Jung Hye JH Kim Gun Ha GH Eun Baik Lin BL

Journal of clinical neurology (Seoul, Korea) 20180101 1

<h4>Background and purpose</h4>Febrile seizures (FS) are the most common type of seizure during childhood, reportedly occurring in 2-5% of children aged 6 months to 5 years. However, there are no national data on the prevalence of FS in Korea. This study determined the prevalence, incidence, and recurrence rates of FS in Korean children using national registry data.<h4>Methods</h4>The data were collected from the Korea National Health Insurance Review and Assessment Service for 2009-2013. Patien ...[more]

PMID: 29629539

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Project description:ImportanceFebrile seizures occur in 2% to 5% of children between the ages of 3 months and 5 years. Many affected children experience recurrent febrile seizures. However, little is known about the association between recurrent febrile seizures and subsequent prognosis.ObjectiveTo estimate the risk of recurrent febrile seizures and whether there is an association over long-term follow-up between recurrent febrile seizures and epilepsy, psychiatric disorders, and death in a large, nationwide, population-based cohort in Denmark.Design, setting, and participantsThis population-based cohort study evaluated data from all singleton children born in Denmark between January 1, 1977, and December 31, 2011, who were identified through the Danish Civil Registration System. Children born in Denmark who were alive and residing in Denmark at age 3 months were included (N = 2 103 232). The study was conducted from September 1, 2017, to June 1, 2019.ExposuresHospital contacts with children who developed febrile seizures between age 3 months and 5 years.Main outcomes and measuresChildren diagnosed with epilepsy were identified in the Danish National Patient Register and children diagnosed with psychiatric disorders were identified in the Psychiatric Central Research Register. Competing risk regression and Cox proportional hazards regression were used to estimate the cumulative and relative risk of febrile seizures, recurrent febrile seizures, epilepsy, psychiatric disorders, and death.ResultsOf the 2 103 232 children (1 024 049 [48.7%] girls) in the study population, a total of 75 593 children (3.6%) were diagnosed with a first febrile seizure between 1977 and 2016. Febrile seizures were more common in boys (3.9%; 95% CI, 3.9%-4.0%) than in girls (3.3%; 95% CI, 3.2%-3.3%), corresponding to a 21% relative risk difference (hazard ratio, 1.21; 95% CI, 1.19-1.22). However, the risks of recurrent febrile seizures, epilepsy, psychiatric disorders, and death were similar in boys and girls. The risk of (recurrent) febrile seizures increased with the number of febrile seizures: 3.6% at birth, 22.7% (95% CI, 22.4%-23.0%) after the first febrile seizure, 35.6% (95% CI, (34.9%-36.3%) after the second febrile seizure, and 43.5% (95% CI, (42.3%-44.7%) after the third febrile seizure. The risk of epilepsy increased progressively with the number of hospital admissions with febrile seizures. The 30-year cumulative risk of epilepsy was 2.2% (95% CI, (2.1%-2.2%) at birth compared with 15.8% (95% CI, 14.6%-16.9%) after the third febrile seizure, while the corresponding estimates for risk of psychiatric disorders were 17.2% (95% CI, 17.2%-17.3%) at birth and 29.1% (95% CI, 27.2%-31.0%) after the third febrile seizure. Mortality was increased among children with recurrent febrile seizures (1.0%; 95% CI, 0.9%-1.0% at birth vs 1.9%; 95% CI, 1.4%-2.7% after the third febrile seizure), although this risk was associated primarily with children who later developed epilepsy.Conclusions and relevanceA history of recurrent febrile seizures appears to be associated with a risk of epilepsy and psychiatric disorders, but increased mortality was found only in individuals who later developed epilepsy.

Dataset Information

Prevalence, Incidence, and Recurrence of Febrile Seizures in Korean Children Based on National Registry Data.

Publications

Prevalence, Incidence, and Recurrence of Febrile Seizures in Korean Children Based on National Registry Data.

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