• Mao-Hsuan Huang, Chia-Fen Tsai, Wei-Ju Lee, Wen-Fu Wang, Kai-Ming Jhang, Shuu-Jiun Wang, and Jong-Ling Fuh.
• Department of Psychiatry, Division of Geriatric Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.
• J Chin Med Assoc. 2021 Apr 1; 84 (4): 446-452.

BackgroundAlzheimer's disease (AD) exerts significant financial expenses on caregivers, and knowledge of caregivers' support for out-of-pocket payment is of great importance for policymaking on the insurance coverage of future AD medication in Taiwan. We aimed to investigate caregivers' willingness to pay (WTP) for a hypothetical curative AD medication and the effect of different factors on the amount of WTP.MethodsInformal caregivers of patients with AD and informants of patients with amnestic mild cognitive impairment (MCI) were included. An iterative bidding game technique, followed by a dichotomous choice question and a final open-ended question were used to elicit caregivers' maximum WTP. The correlations between the WTP and characteristics of caregiver and patient were analyzed, including sex, educational level, severity of dementia, neuropsychiatric symptoms assessed by Neuropsychiatric Inventory, time needed to support patients assessed by Caregiver Activity Survey, and caregivers' monthly income.ResultsA total of 1134 informal caregivers of patients with AD or MCI were included. Caregivers of patients with AD were willing to pay for a curative AD medication, and their maximum WTP value was higher than informants of MCI patients. Among patients with AD and patients with MCI, caregivers' monthly income was positively correlated with WTP. Apathy subsyndrome was the only factor correlated with percentage of WTP in caregiver's income in the MCI group.ConclusionSupport for out-of-pocket WTP for a hypothetical curative AD medication was significantly related to caregiver's income.Copyright © 2021, the Chinese Medical Association.

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