Identification of Dementia in Recent Medicare Claims Data, Compared With Rigorous Clinical Assessments.

ABSTRACT:

Background

Medicare fee-for-service (FFS) claims data are increasingly leveraged for dementia research. Few studies address the validity of recent claim data to identify dementia, or carefully evaluate characteristics of those assigned the wrong diagnosis in claims.

Methods

We used claims data from 2014 to 2018, linked to participants administered rigorous, annual dementia evaluations in 5 cohorts at the Rush Alzheimer's Disease Center. We compared prevalent dementia diagnosed through the 2016 cohort evaluation versus claims identification of dementia, applying the Bynum-standard algorithm.

Results

Of 1 054 participants with Medicare Parts A and B FFS in a 3-year window surrounding their 2016 index date, 136 had prevalent dementia diagnosed during cohort evaluations;

SUBMITTER: Grodstein F 

PROVIDER: S-EPMC9159666 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature