Aim: To estimate the prevalence of Alzheimer’s disease (AD) and other dementias in the
USA using a nationally representative sample. Methods: The Aging, Demographics, and …

Background: Cognitive impairment without dementia is associated with increased risk for
disability, increased health care costs, and progression to dementia. There are no population-…

ContextPrevious studies have shown a sex-specific increased risk of Alzheimer disease (AD)
in women older than 80 years. Basic neuroscience findings suggest that hormone …

Background: The association between antecedent head injury and AD is inconsistent. Objective:
To examine the association between early adult head injury, as documented by military …

Background: Many biological, behavioral, social, and environmental factors may contribute
to the delay or prevention of cognitive decline. Purpose: To summarize evidence about …

Background Previous estimates of the prevalence of geriatric depression have varied. There
are few large population-based studies; most of these focused on individuals younger than …

Objectives To assess whether previous research on purported risk or protective factors for
Alzheimer's disease (AD) and cognitive decline is of sufficient strength to warrant specific …

Several methods of estimating prevalence of dementia are presented in this study. For both
Brookmeyer and the Chicago Health and Aging project (CHAP), the estimates of prevalence …

Objective: We describe the design and methods of the Aging, Demographics, and Memory
Study (ADAMS), a new national study that will provide data on the antecedents, prevalence, …

Background Numerous studies have investigated risk factors for Alzheimer disease (AD).
However, at a recent National Institutes of Health State-of-the-Science Conference, an …