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- Charmi Patel, Bruno Emond, Laura Morrison, Marie-Hélène Lafeuille, Patrick Lefebvre, Dee Lin, Edward Kim, and Kruti Joshi.
- Janssen Scientific Affairs, LLC, Titusville, NJ, USA.
- Curr Med Res Opin. 2021 Apr 1; 37 (4): 665-674.
AimsTo compare adherence, rates of subsequent schizophrenia-related relapses, healthcare resource utilization, and healthcare costs among Medicaid beneficiaries with schizophrenia who initiated once-monthly paliperidone palmitate (PP1M) versus a new oral atypical antipsychotic (OAA) following a recent schizophrenia-related relapse.MethodsSix-state Medicaid data (01/2009-03/2018) were used to identify adults with schizophrenia initiated on PP1M or OAA (index date) within 30 days following a schizophrenia-related relapse (defined as a schizophrenia-related inpatient or emergency room visit). Patients were required to have 12 months of continuous eligibility before (baseline) and after (observation) the index date. Differences in baseline characteristics between PP1M and OAA patients were accounted for using 1:3 matching.ResultsAfter matching, characteristics were well-balanced between PP1M (N=208, mean age=39 years, 35.6% female) and OAA patients (N=624, mean age=40 years, 34.6% female). During the 12-month observation period, the mean proportion of days covered for the index medication was 41.2% in the PP1M cohort and 34.7% in the OAA cohort (p=.008). Relative to the OAA cohort, PP1M patients were 33% (p=.013) less likely to have a subsequent relapse and had 29% (p=.004) fewer all-cause inpatient admissions per-patient-per-year (PPPY). Consequently, a significant mean reduction of $6273 in medical costs PPPY (p=.028) was observed, which fully offset the $4770 (p<.001) increase in pharmacy costs PPPY and resulted in a numerical but not statistically significant, decrease in total healthcare costs of $1503 PPPY (p=.621) relative to OAA patients.ConclusionsAmong patients with a recent schizophrenia-related relapse, PP1M was associated with a lower risk of subsequent relapse while remaining a cost neutral therapeutic option compared to OAAs.
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