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Cost consequence analysis of Apathy in Dementia Methylphenidate Trial 2 (ADMET 2).

Lanctôt KL, Chen C, Mah E, Kiss A, Li A, Shade D, Scherer RW, Vieira D, Coulibaly H, Rosenberg PB, Lerner AJ, Padala PR, Brawman-Mintzer O, van Dyck CH, Porsteinsson AP, Craft S, Levey A, Burke WJ, Mintzer J, Herrmann N. Cost consequence analysis of Apathy in Dementia Methylphenidate Trial 2 (ADMET 2). International psychogeriatrics. 2023 Apr 17; doi:10.1017/S1041610223000327.

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BACKGROUND: This paper used data from the Apathy in Dementia Methylphenidate Trial 2 (NCT02346201) to conduct a planned cost consequence analysis to investigate whether treatment of apathy with methylphenidate is economically attractive. METHODS: A total of 167 patients with clinically significant apathy randomized to either methylphenidate or placebo were included. The Resource Utilization in Dementia Lite instrument assessed resource utilization for the past 30 days and the EuroQol five dimension five level questionnaire assessed health utility at baseline, 3 months, and 6 months. Resources were converted to costs using standard sources and reported in 2021 USD. A repeated measures analysis of variance compared change in costs and utility over time between the treatment and placebo groups. A binary logistic regression was used to assess cost predictors. RESULTS: Costs were not significantly different between groups whether the cost of methylphenidate was excluded ((2,330) = 0.626, = 0.004, = 0.535) or included ((2,330) = 0.629, = 0.004, = 0.534). Utility improved with methylphenidate treatment as there was a group by time interaction ((2,330) = 7.525, = 0.044, < 0.001). DISCUSSION: Results from this study indicated that there was no evidence for a difference in resource utilization costs between methylphenidate and placebo treatment. However, utility improved significantly over the 6-month follow-up period. These results can aid in decision-making to improve quality of life in patients with Alzheimer's disease while considering the burden on the healthcare system.

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