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New users of antipsychotic medication: A population-based cohort study of occupational outcome measures in relation to antipsychotic on-label and off-label prescribing practices

Published online by Cambridge University Press:  23 March 2020

L. Baandrup  and
M. Kruse
L. Baandrup*
Affiliation:
Center for Neuropsychiatric Schizophrenia Research & Center for Clinical Intervention and Neuropsychiatric Schizophrenia Research, Mental Health Center Glostrup, Copenhagen University HospitalGlostrup, DK-2600, Denmark
M. Kruse
Affiliation:
Center for Health Economics Research, University of Southern DenmarkOdense, DK-5230, Denmark
*
*Corresponding author. E-mail address:lone.baandrup@regionh.dk (L. Baandrup).
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Abstract

Background

Treatment with antipsychotic medication is thoroughly investigated in schizophrenia and bipolar disorder but is also widely applied for a diversity of off-label conditions, despite an uncertain risk-benefit ratio. This study examined the relationship between antipsychotic prescribing patterns and labor market affiliation, considering both authority approved and off-label prescriptions and the relation to polypharmacy.

Methods

Register-based cohort study using a dataset of 71,254 new antipsychotic users with a psychiatric diagnosis. Labor market affiliation and duration of welfare payments were analyzed using linear regression models and duration analysis. The analyses were adjusted for the following confounding variables: age, gender, diagnosis, marital status, length of education, and utilization of mental health care services.

Results

The majority of new antipsychotic users received welfare payments for prolonged periods of time during the observation period, even more so for individuals treated with antipsychotic polypharmacy or other antipsychotic combination regimens. The risk of permanently leaving the labor market was also associated with antipsychotic combination regimen.

Conclusions

Antipsychotic treatment, especially in combination with other antipsychotics or other psychotropic drugs, could serve as a marker of subjects with increased need for support to maintain the labor market affiliation. However, causality cannot be inferred from an observational study because of residual confounding that could not be adjusted for in this study.

Keywords

OccupationEmploymentMental illnessAntipsychoticPrescribingPolypharmacy
Type
Original article
Information
European Psychiatry , Volume 31 , January 2016 , pp. 66 - 71
Copyright
Copyright © European Psychiatric Association 2015

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