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Diagnosed prevalence of Alzheimer's disease and related dementias in Medicare Advantage plans.

Jutkowitz E, Bynum JPW, Mitchell SL, Cocoros NM, Shapira O, Haynes K, Nair VP, McMahill-Walraven CN, Platt R, McCarthy EP. Diagnosed prevalence of Alzheimer's disease and related dementias in Medicare Advantage plans. Alzheimer's & dementia (Amsterdam, Netherlands). 2020 Jul 5; 12(1):e12048.

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Abstract:

Introduction: One-third of Medicare beneficiaries are enrolled in Medicare Advantage (MA). Yet, little is known about MA beneficiaries diagnosed with Alzheimer''s disease (AD) and AD-related dementias (AD/ADRD). Methods: We calculated the prevalence of AD/ADRD diagnoses in 2014 and 2016 in three MA plans. We determined the demographic characteristics of beneficiaries diagnosed with AD/ADRD, and whether they disenrolled from the MA plan for any reason within 364 days from the index date. Results: In 2014 and 2016, the overall prevalence of AD/ADRD diagnoses was 5.6% and 6.5%, respectively. In 2016, AD/ADRD beneficiaries were on average 82.4 (SD = 7.4) years of age, 61.8% female, and had multiple comorbidities. By 364 days post-index date, 32% of beneficiaries with AD/ADRD had disenrolled from their plan. The demographic characteristics of 2014 beneficiaries with diagnosed AD/ADRD were similar to their 2016 counterparts. Discussion: The prevalence of AD/ADRD diagnosis in MA is lower than rates reported in Medicare fee-for-service.




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