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Population Dementia Incidence and Direct Oral Anticoagulant Use in a Representative Population With Atrial Fibrillation.
Thunell, Johanna; Wood, Kathryn; Wharton, Whitney; Joyce, Geoffrey; Ferido, Patricia; Zissimopoulos, Julie.
Affiliation
  • Thunell J; From the Schaeffer Center for Health Policy and Economics (J.T., G.J., P.F., J.Z.), and Sol Price School of Public Policy (J.T., J.Z., P.F.), University of Southern California, Los Angeles; Woodruff School of Nursing (K.W.), and Department of Neurology (W.W.), School of Medicine, Emory University, A
  • Wood K; From the Schaeffer Center for Health Policy and Economics (J.T., G.J., P.F., J.Z.), and Sol Price School of Public Policy (J.T., J.Z., P.F.), University of Southern California, Los Angeles; Woodruff School of Nursing (K.W.), and Department of Neurology (W.W.), School of Medicine, Emory University, A
  • Wharton W; From the Schaeffer Center for Health Policy and Economics (J.T., G.J., P.F., J.Z.), and Sol Price School of Public Policy (J.T., J.Z., P.F.), University of Southern California, Los Angeles; Woodruff School of Nursing (K.W.), and Department of Neurology (W.W.), School of Medicine, Emory University, A
  • Joyce G; From the Schaeffer Center for Health Policy and Economics (J.T., G.J., P.F., J.Z.), and Sol Price School of Public Policy (J.T., J.Z., P.F.), University of Southern California, Los Angeles; Woodruff School of Nursing (K.W.), and Department of Neurology (W.W.), School of Medicine, Emory University, A
  • Ferido P; From the Schaeffer Center for Health Policy and Economics (J.T., G.J., P.F., J.Z.), and Sol Price School of Public Policy (J.T., J.Z., P.F.), University of Southern California, Los Angeles; Woodruff School of Nursing (K.W.), and Department of Neurology (W.W.), School of Medicine, Emory University, A
  • Zissimopoulos J; From the Schaeffer Center for Health Policy and Economics (J.T., G.J., P.F., J.Z.), and Sol Price School of Public Policy (J.T., J.Z., P.F.), University of Southern California, Los Angeles; Woodruff School of Nursing (K.W.), and Department of Neurology (W.W.), School of Medicine, Emory University, A
Neurology ; 103(1): e209568, 2024 Jul 09.
Article in En | MEDLINE | ID: mdl-38857466
ABSTRACT
BACKGROUND AND

OBJECTIVES:

Incidence and prevalence of atrial fibrillation (AF), a risk factor of dementia, have been increasing over time. Oral anticoagulation reduces risk of stroke and other negative outcomes of AF and may reduce dementia health inequities. The objective of this study was to estimate dementia incidence in patients with newly-diagnosed AF and taking an anticoagulant as use of direct oral anticoagulants (DOACs) increased.

METHODS:

We used a retrospective cohort design with annual incident AF cohorts of community-dwelling Medicare Fee-for-Service beneficiaries, enrolled in Parts A, B, and D from 2007 to 2017. The sample was limited to beneficiaries aged 67 years and older with incident AF; no prior dementia; and use of anticoagulants warfarin, dabigatran, rivaroxaban, apixaban, or edoxaban in year t.

RESULTS:

A total of 1,083,338 beneficiaries were included in the study, 58.5% female, with mean (SD) age 77.2 (6.75) years. Among anticoagulated, incident AF cohorts, use of DOACs increased from 10.6% in their first year of availability (2011) to 41.4% in 2017. Among incident AF cohorts taking any oral anticoagulant, 3-year dementia incidence did not change significantly over the cohorts after adjusting for confounders. For example, incidence was 9.1% (95% CI 8.9-9.4) among White persons diagnosed with AF in 2007 and 2008 and 8.9% (95% CI 8.7-9.1) in 2017. Across cohorts, dementia incidence was consistently highest for Black persons, followed by American Indian/Alaska Native and White persons, and lowest for Asian persons. In 2017, 10.9% (95% CI 10.4-11.3) of Black persons in the cohort developed dementia within 3 years, 9.4% (95% CI 8.0-10.9) of American Indian/Alaska Native, 8.9% (95% CI 8.7-9.1) of White, 8.7% (95% CI 8.2-9.1) of Hispanic, and 6.9% (95% CI 6.4-7.4) of Asian persons. Across race/ethnicity, 3-year stroke risk decreased consistently over time; however, the increasing availability of DOACs did not alter the trend.

DISCUSSION:

Increased use of DOACs among incident AF cohorts from 2007 to 2017 was not associated with significant declines in dementia or stroke risk. Consideration of similar stroke and dementia risk, as well as differences in cost, is warranted when weighing the risks and benefits of available oral anticoagulants.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Atrial Fibrillation / Medicare / Dementia / Anticoagulants Limits: Aged / Aged80 / Female / Humans / Male Country/Region as subject: America do norte Language: En Journal: Neurology Year: 2024 Document type: Article
Fulltext
Print
XML
PubMed Links
Search on Google

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Atrial Fibrillation / Medicare / Dementia / Anticoagulants Limits: Aged / Aged80 / Female / Humans / Male Country/Region as subject: America do norte Language: En Journal: Neurology Year: 2024 Document type: Article