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- Title
Comparing Lookback Periods to Ascertain Alzheimer's Disease and Related Dementias.
- Authors
Kunicki, Zachary J.; Bayer, Thomas; Jiang, Lan; Bozzay, Melanie L.; Quinn, McKenzie J.; De Vito, Alyssa N.; Emrani, Sheina; Erqou, Sebhat; McGeary, John E.; Zullo, Andrew R.; Duprey, Matthew S.; Singh, Mriganka; Primack, Jennifer M.; Kelso, Catherine M.; Wu, Wen-Chih; Rudolph, James L.
- Abstract
Claims data are a valuable resource for studying Alzheimer's disease and related dementias (ADRD). Alzheimer's disease and related dementias is often identified using a list of claims codes and a fixed lookback period of 3 years of data. However, a 1-year lookback or an approach using all-available lookback data could be beneficial based on different research questions. Thus, the purpose of this study was to compare 1-year and all-available lookback approaches to ascertaining ADRD compared to the standard 3-year approach. Using a cohort of Veterans hospitalized for heart failure (N = 373, 897), our results suggested high agreement (93% or greater) between the lookback periods. The 1-year lookback period had lower sensitivity (60%) and underestimated the prevalence of ADRD. These results suggest that 1-year and all-available lookback periods are viable approaches when using claims data.
- Subjects
DEMENTIA risk factors; ALZHEIMER'S disease; MEDICAL care costs; HEALTH insurance reimbursement; DESCRIPTIVE statistics; VETERANS; LONGITUDINAL method; HEART failure; SECONDARY analysis; DISEASE complications
- Publication
American Journal of Alzheimer's Disease & Other Dementias, 2023, Vol 38, p1
- ISSN
1533-3175
- Publication type
Article
- DOI
10.1177/15333175231199566