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- Dee Lin, Dominic Pilon, Maryia Zhdanava, Kruti Joshi, Marie-Hélène Lafeuille, Aurélie Côté-Sergent, Maude Vermette-Laforme, and Patrick Lefebvre.
- Janssen Scientific Affairs, LLC, Titusville, NJ, USA.
- Curr Med Res Opin. 2021 Apr 1; 37 (4): 675-683.
ObjectiveAntipsychotics with reduced dosing frequency may improve adherence and clinical outcomes for patients with schizophrenia. This study compared treatment patterns, healthcare resource utilization (HRU), and costs between Medicaid beneficiaries with schizophrenia treated with once-monthly paliperidone palmitate (PP1M) and those who transitioned to once-every-three-months paliperidone palmitate (PP3M).MethodsAdults with schizophrenia were identified in a four-state Medicaid database (18 May 2014 to 31 March 2019). The index date was the first PP3M claim (PP3M cohort), or a random PP1M claim (PP1M cohort), following ≥4 months of continuous PP1M treatment among patients with ≥12 months of continuous Medicaid enrollment pre- and post-index. Adherence (proportion of days covered by the index treatment ≥80%), persistence (no gap >90/30 days in the PP3M/PP1M supply), HRU, and costs were compared during the 12-month post-index period between cohorts matched 1:1.ResultsAmong 2374 patients identified, 374 remained in each cohort after matching (mean age 42 years; 30.5% female). Compared to the PP1M cohort, the PP3M cohort was 2.39 times more likely to be adherent (p < .001), 4.63 times more likely to be persistent (p < .001), 33% less likely to have ≥1 hospitalization (p = .011), and 32% less likely to have ≥1 day with home care services (p = .012). Mean annual medical costs were similar between cohorts ($24,970 in the PP3M cohort and $25,736 in the PP1M cohort; p = .854).ConclusionsMedicaid beneficiaries who transitioned to PP3M had higher adherence and persistence, and a reduced likelihood of hospitalization relative to those who continued treatment with PP1M. The results suggest potential clinical value to transitioning eligible patients to PP3M.
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