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Long term antipsychotic polypharmacy is common among Medicaid recipients with schizophrenia

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Q How prevalent is antipsychotic polypharmacy in people with schizophrenia?

METHODS

Embedded ImageDesign:

Retrospective longitudinal study.

Embedded ImageSetting:

California and Georgia Medicaid systems, USA; database records for January 1998 to December 2000 analysed.

Embedded ImagePopulation:

31 435 adults (over 16 years of age) with a primary diagnosis of schizophrenia (ICD-9-CM) identified using the Georgia Medicaid claims database, plus state psychiatric hospital databases and a database of a random sample of 20% California Medicaid claims.

Embedded ImageAssessment:

Information on antipsychotic use (type of antipsychotic, mode of administration, date prescriptions were filled, duration of prescribed treatment) were obtained from claims databases. Polypharmacy episodes were defined as simultaneous treatment with at least two …

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