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Utilization of antiepileptic drugs in Hong Kong children
Karen L Kwong1, Kwing W Tsui, Shun P Wu
1Department of Paediatrics and Adolescent Medicine, Tuen Mun Hospital, Hong Kong SAR, China. karenkwong@graduate.hku.hk
Insights
Antiepileptic drug prescribing in Hong Kong children showed a slight decline, but newer medications like levetiracetam and oxcarbazepine significantly increased. This trend necessitates evaluating cost-effectiveness and long-term outcomes.
Area of Science:
- Pediatric Neurology
- Pharmacology
- Public Health
Background:
- Antiepileptic drugs (AEDs) are crucial for managing epilepsy in children and adolescents.
- Understanding prescribing trends, particularly the adoption of novel AEDs, is essential for optimizing pediatric epilepsy care.
Purpose of the Study:
- To investigate the prescribing patterns of AEDs in children and adolescents in Hong Kong.
- To assess the uptake and trends of newer AEDs compared to older ones within this demographic.
Main Methods:
- Retrospective analysis of data from the Clinical Data Analysis and Reporting System (CDARS).
- Inclusion criteria: Children aged 0-19 years with at least one anticonvulsant prescription.
- Study period: April 1, 2005, to March 31, 2009.
Main Results:
- Overall anticonvulsant prescribing prevalence slightly declined from 2.23/1000 children in 2005.
- Valproic acid remained the most prescribed AED; carbamazepine use declined by 20%.
- Use of newer AEDs increased by 26.9%, with levetiracetam use quadrupling and oxcarbazepine use increasing 15-fold.
Conclusions:
- Despite an overall decline in anticonvulsant use, there was a significant rise in the prescription of newer AEDs among pediatric and adolescent populations.
- The increasing utilization of novel AEDs warrants a comprehensive assessment of their cost-effectiveness, long-term efficacy, quality of life impact, and overall health economic outcomes.
Abstract:
This study investigated the prescribing patterns of antiepileptic drugs, especially the uptake of newer drugs, among children and adolescents in Hong Kong. Data were retrieved from the Clinical Data Analysis and Reporting System. Children aged 0-19 years who received at least one prescription of anticonvulsants were selected. The study period extended from April 1, 2005 to March 31, 2009. The overall prevalence of anticonvulsants prescribing was 2.23/1000 children in 2005. A slight but steady decline in anticonvulsants prevalence was observed throughout the study period. Valproic acid was the most frequently prescribed drug, followed by carbamazepine and benzodiazepine derivatives. The use of newer anticonvulsants rose significantly, by 26.9%. The use of valproic acid remained unchanged, whereas the use of carbamazepine declined by 20%. Among newer drugs, the use of levetiracetam increased fourfold, and that of oxcarbazepine increased 15-fold. In the youngest age group, phenobarbital was the second most frequently used drug. A significant increase in lamotrigine prescriptions was not observed among adolescents. The persistent increase in using newer antiepileptic drugs implies not only an increase in drug expenditure. It also reflects the need to assess cost-effectiveness in terms of long-term outcomes, quality of life, and health economic outcomes.
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