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East Boston Established Populations for Epidemiologic Studies of the Elderly
Average Follow-up Time Detail
This study concerned a subset of the East Boston EPESE cohort, comprising participants who were dementia-free at baseline (1982-1983) and who were selected for follow-up to assess AD status in 1985 and 1986. Subset participants were selected using a stratified sampling approach, in which strata were based on age, sex, and change in cognitive performance.
The published study by Morris et al, 2001 contributed data to several entries on this page, including two in this table. This entry reflects the 634 participants who were dementia free at baseline (1982-1983) and who were clinically evaluated for dementia in 1985 or 1986.
History of hypertension at baseline was assessed via self-report.
No information on the ethnic background of participants has been provided.
All participants were 65 years old or older at baseline (1982-1983).
Screening and Diagnosis Detail
Modified NINCDS ADRDA
"Modified" National Institute of Neurological and Communicative Diseases and Stroke/Alzheimer's Disease and Related Disorders Association Criteria
"The clinical evaluations included a neurological examination, neuropsychological performance testing, a medical history, and a brief psychiatric evaluation. The definition of probable AD was based on criteria consistent with the National Institute of Neurological and Communicative Disorders and Stroke–Alzheimer's Disease and Related Disorders Association.
We modified the definition to include persons who met the criteria for probable AD and who had a coexisting dementing condition to prevent the possibility of a protective association due to the classification system (for example, if high blood pressure levels were associated with an increased risk of vascular dementia). A more complete description of sampling for incident AD and of the clinical evaluation was published previously.
Covariates & Analysis Detail
"All models were adjusted for the stratified random sampling using SUDAAN statistical software (Research Triangle Institute, Research Triangle Park, NC)."
interval to disease diagnosis