[Prescribing valproate to girls and women of childbearing age in Germany : Analysis of trends based on claims data].
BUNDESGESUNDHEITSBLATT-GESUNDHEITSFORSCHUNG-GESUNDHEITSSCHUTZ(2018)
Abstract
Background. Measures to raise awareness of the teratogenic potential of valproate and restrict its use in girls/women of childbearing age have been intensified. For Germany, the impact of these measures on valproate prescription rates remains unknown. Objectives. Trends in prescribing valproate, the underlying treatment indication, and the specialty of the prescribing physician are analyzed. Materials and methods. With claims data from several statutory health insurance providers from 2004 to 2016 (approximately 3.5 million insured persons per year) considering treatment indication and medical specialties of prescribing physicians, we assessed the rate of girls/women (12 to 50 years) with at least one valproate dispensation per year. Results. The age-standardized rate of girls/women with at least one valproate dispensation declined by 28% between 2004 and 2016 (2.91/1000 vs. 2.09/1000). For 2015, the indications were epilepsy (66.9%), bipolar disorder (13.6%), migraine/headache (5.6%), schizoaffective disorder (4.3%), and other mental disorders (8.9%). Among epilepsy patients, the proportion treated with valproate declined from 26.2 to 16.8%, but changed little in patients with bipolar disorder (9.3% vs. 8.0%). A total of 46.3% of valproate dispensations were issued by neurologists or psychiatrists and 29.6% by general practitioners, internal medicine specialists, or family doctors. Conclusions. Based on German claims data, a decline of valproate dispensations was shown for epilepsy patients of childbearing age, while the proportion in other indications has hardly changed since 2004.
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Key words
Valproic acid,Drug prescription,Pregnancy,Epilepsy,Bipolar disorder
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