Real-life persistence of long-acting injectable antipsychotics in schizophrenic patients: A retrospective observational study in France
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Real-life persistence of long-acting injectable antipsychotics in schizophrenic patients: A retrospective observational study in France
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Int J Clin Pharmacol Ther. 2019 Sep;57(9):437-444

Authors: Guillon P, Harmand S, Ansolabehere X

Abstract
OBJECTIVE: Antipsychotics exhibit different profiles of efficacy and safety in patients with schizophrenia. It has recently been reported that the risk of rehospitalization was the lowest with paliperidone palmitate (PP), a long-acting injectable (LAI), when compared with other LAIs (of zuclopenthixol, perphenazine, and olanzapine). We aimed to investigate whether treating patients with PP was also associated with improved real-life treatment persistence.
MATERIALS AND METHODS: We conducted a retrospective observational study of the LAI antipsychotics (LAIAs) dispensed in French retail pharmacies. Treatment persistence was defined as the non-discontinuation of LAIAs for ≥ 5 months after LAIA initiation (and was also analyzed by Kaplan-Meier persistence curves).
RESULTS: A total of 4,492 patients were included in the study. The persistence rate was significantly greater for LAI-PP (64.5%) than for either LAI haloperidol decanoate (HD) or LAI risperidone microspheres (R) (46.4% and 35.4%, respectively). Multivariate Cox analyses illustrated that LAIA initiation with HD or R significantly increased the risk of discontinuation when compared with PP.
CONCLUSION: PP demonstrated a significantly higher persistence rate than HD or R. Moreover, LAIA initiation with HD or R significantly increased the risk of treatment discontinuation relative to PP. Further comparative studies are required to comprehensively determine whether PP has a better efficacy and/or safety profile than other LAIs.

PMID: 31232279 [PubMed - indexed for MEDLINE]