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- W2039558840 abstract "ObjectiveHealth utility scores quantify health-related quality-of-life (HRQOL) in Alzheimer’s disease (AD). These scores are calculated by using preference weights derived from general population samples. We recruited persons with AD and their primary informal caregivers and examined differences in health utility scores calculated by using two sets of published preference weights.MethodsWe recruited participants from nine clinics across Canada and administered the EuroQol five-dimensional (EQ-5D) questionnaire HRQOL instrument. We converted participants’ EQ-5D questionnaire responses into two sets of health utility scores by using US and Canadian preference weights. We assessed agreement between sets by using the intraclass correlation coefficient. Bland-Altman plots depicted individual-level differences between sets.ResultsFor 216 persons with AD and their caregivers, mean health utility scores were higher when calculated with US instead of Canadian preference weights (P < 0.0001). The intraclass correlation coefficient (95% CI) was 0.79 (0.05–0.93) in the persons with AD group and 0.83 (0.30–0.94) in the caregiver group. Ninety-five percent of the individual differences in utility score fell between −0.16 and 0.03 for persons with AD and −0.15 and 0.05 for caregivers. Forty-three percent of these differences exceeded a minimum clinically important threshold of 0.074.ConclusionsIn AD studies, researchers should calculate health utility scores by using preference weights obtained in the general population of their country of interest. Using weights from other countries’ populations could bias the utilities and adversely affect the results of economic evaluations of AD treatments." @default.
- W2039558840 created "2016-06-24" @default.
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- W2039558840 date "2014-01-01" @default.
- W2039558840 modified "2023-10-18" @default.
- W2039558840 title "Health Utility Scores in Alzheimer’s Disease: Differences Based on Calculation With American and Canadian Preference Weights" @default.
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- W2039558840 doi "https://doi.org/10.1016/j.jval.2013.10.009" @default.
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