|Title||Identification of dementia: agreement among national survey data, medicare claims, and death certificates.|
|Publication Type||Journal Article|
|Year of Publication||2008|
|Authors||Ostbye, T, Taylor, Jr., DH, Clipp, EC, Van Scoyoc, L, Plassman, BL|
|Journal||Health Serv Res|
|Issue||1 Pt 1|
|Date Published||2008 Feb|
|Keywords||Aged, Consensus, Data Interpretation, Statistical, Death Certificates, Dementia, Female, Health Surveys, Humans, Incidence, Insurance Claim Review, Male, Mass Screening, Medicare, Research Design, United States|
OBJECTIVE: To estimate the proportion of seniors with dementia from three independent data sources and their agreement.
DATA SOURCES: The longitudinal Asset and Health Dynamics among the Oldest Old (AHEAD) study (n=7,974), Medicare claims, and death certificate data.
STUDY DESIGN: Estimates of the proportion of individuals with dementia from: (1) self- or proxy-reported cognitive status measures from surveys, (2) Medicare claims, and (3) death certificates. Agreement using Cohen's kappa; multivariate logistic regression.
PRINCIPAL FINDINGS: The proportion varied substantially among the data sources. Agreement was poor (kappa: 0.14-0.46 depending upon comparison assessed); the individuals identified had relatively modest overlap.
CONCLUSIONS: Estimates of dementia occurrence based on cognitive status measures from three independent data sources were not interchangeable. Further validation of these sources is needed. Caution should be used if policy is based on only one data source.
|User Guide Notes|
|Endnote Keywords|| |
Dementia/Incidence/Cognitive Function/Survey questions/Medicare/Death Certificates
|Endnote ID|| |
|Alternate Journal||Health Serv Res|
|PubMed Central ID||PMC2323140|
|Grant List||R01 NR008763 / NR / NINR NIH HHS / United States |
R-01 008763 / / PHS HHS / United States