@article {11154, title = {Using Medicare claims in identifying Alzheimer{\textquoteright}s disease and related dementias.}, journal = {Alzheimer{\textquoteright}s \& Dementia}, year = {Forthcoming}, abstract = {

INTRODUCTION: This study develops a measure of Alzheimer{\textquoteright}s disease and related dementias (ADRD) using Medicare claims.

METHODS: Validation resembles the approach of the American Psychological Association, including (1) content validity, (2) construct validity, and (3) predictive validity.

RESULTS: We found that four items-a Medicare claim recording ADRD 1 year ago, 2 years ago, 3 years ago, and a total stay of 6 months in a nursing home-exhibit a pattern of association consistent with a single underlying ADRD construct, and presence of any two of these four items predict a direct measure of cognitive function and also future claims for ADRD.

DISCUSSION: Our four items are internally consistent with the measurement of a single quantity. The presence of any two items do a better job than a single claim when predicting both a direct measure of cognitive function and future ADRD claims.

}, keywords = {administrative data, Alzheimer{\textquoteright}s disease, cognitive impairment, Dementia, Medicare}, issn = {1552-5279}, doi = {10.1002/alz.12199}, author = {Jain, Siddharth and Rosenbaum, Paul R and Reiter, Joseph G and Geoffrey J Hoffman and Small, Dylan S and Ha, Jinkyung and Hill, Alexander S and Wolk, David A and Timothy G. Gaulton and Mark D Neuman and Roderic G Eckenhoff and Fleisher, Lee A and Jeffrey H Silber} }