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DETECTION RATES OF MILD COGNITIVE IMPAIRMENT IN PRIMARY CARE FOR THE UNITED STATES MEDICARE POPULATION

Y. Liu, H. Jun, A. Becker, C. Wallick, S. Mattke

J Prev Alz Dis 2024;1(11):7-12

BACKGROUND: Existing evidence points to substantial gaps in detecting mild cognitive impairment in primary care but is based on limited or self-reported data. The recent emergence of disease-modifying treatments for the Alzheimer’s disease, the most common etiology of mild cognitive impairment, calls for a systematic assessment of detection rates in primary care. OBJECTIVES: The current study aims to examine detection rates for mild cognitive impairment among primary care clinicians and practices in the United States using Medicare claims and encounter data. DESIGN: Observational study. SETTING: Medicare administrative data. PARTICIPANTS: The study sample includes a total of 226,756 primary care clinicians and 54,597 practices that had at least 25 patients aged 65 or older, who were enrolled in Medicare fee-for-service or a Medicare Advantage plan between 2017 and 2019. MEASUREMENTS: The detection rate for mild cognitive impairment is assessed as the ratio between the observed diagnosis rate of a clinician or practice as documented in the data, and the expected rate based on a predictive model. RESULTS: The average detection rates for mild cognitive impairment is 0.08 (interquartile range=0.00-0.02) for both clinicians and practices, suggesting that only about 8% of expected cases were diagnosed on average. Only 0.1% of clinicians and practices had diagnosis rates within the expected range. CONCLUSIONS: Mild cognitive impairment is vastly underdiagnosed, pointing to an urgent need to improve early detection in primary care.

CITATION:
Y. Liu ; H. Jun ; A. Becker ; C. Wallick ; S. Mattke ; (2023): Detection Rates of Mild Cognitive Impairment in Primary Care for the United States Medicare Population. The Journal of Prevention of Alzheimer’s Disease (JPAD). http://dx.doi.org/10.14283/jpad.2023.131

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