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Persistence and adherence to second-generation antipsychotic long-acting injectable medications for schizophrenia: A
Nagesh Pai1, Andrew B McGeachie2, Andrea Puig2
18691University of Wollongong, Wollongong, NSW, Australia.
Objective:
To examine patient characteristics, persistence and adherence to treatment associated with use of second-generation antipsychotic long-acting injectable (SGA LAI) medications in the Australian real-world setting.
Method:
Five SGA LAIs were compared using a retrospective 10% sample of prescriptions in Australian Pharmaceutical Benefits Scheme (PBS) data: paliperidone palmitate 1-monthly (PP1M), paliperidone palmitate 3-monthly (PP3M), aripiprazole monohydrate (ARI), risperidone (RLAI) and olanzapine pamoate (OLAI).
Results:
Patients in the PP3M cohort were more persistent with treatment (p < 0.001). Median months of persistence: PP3M (36 months); ARI (18 months); PP1M (11 months); OLAI (8 months); RLAI (4 months). Patients in the PP3M cohort were more adherent to treatment (p < 0.001): PP3M (78%); ARI (51%); PP1M (46%); OLAI (35%); RLAI (33%).
Conclusions:
Patients on PP3M treatment showed comparatively longer persistence and better adherence. Treatments for schizophrenia with longer dosing intervals may provide patients with symptomatic stability that could allow for reduced hospitalisations/relapse and increased focus on functional recovery.
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