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BACKGROUND Decline in physical functional ability is an intrinsic component of the dementia syndrome. Reductions in muscle mass and strength represent a major factor in the loss of functional ability Although resistance exercise has been studied as a method for maintaining/recovering function in populations of frail older adults, people with dementia have(More)
To estimate the relative effects of coexisting nondementia illnesses on the probability of functional disability, depending on the presence of cognitive impairment or dementia, we used data from the baseline case-control assessment of a longitudinal study of aging and dementia. Our study included 668 subjects (345 nondemented, 98 cognitively impaired, and(More)
Although the use of self-reported ADL (activity of daily living) scales has a long history, the Katz-based assumptions of unidimensionality and hierarchy are increasingly found lacking, and ADLs alone are found to underestimate dysfunction and disability. Data from nearly 8900 elderly respondents in the community sample of the 1991 Canadian Study of Health(More)
— This paper employs machine learning techniques to develop models that predict gender based on the iris texture features. While there is a large body of research that explores biometrics as a means of verifying identity, there has been very little work done to determine if biometric measures can be used to determine specific human attributes. If it is(More)
PURPOSE To evaluate the psychometric characteristics of the National Eye Institute Visual Function Questionnaire-25 (NEI VFQ-25) in patients with age-related macular degeneration (AMD) who participated in two clinical trials. METHODS A secondary analysis of data from two randomized clinical trials was performed. NEI VFQ-25 data were collected from 1134 of(More)
Dementia has been recognized as the strongest determinant for developing functional disability. However, dementia patients typically present with concomitant illness, thereby making difficult a determination of the fraction of disability due to dementia. The objective of this study was to estimate the prevalence of functional disability among demented and(More)
The Canadian Study of Health and Aging (CSHA) and the National Population Health Survey (NPHS) collected data on the prevalence of dementia in differing fashions. The CSHA used a two-stage method with objective testing and expert judgment, and the NPHS used self-report and proxy data. The present report compares estimates of prevalence and the methodology(More)
BACKGROUND Age-related declines in balance and muscle power are largely responsible for the changes in the various components of gait performance among elderly people. But these can often be remedied with strength training. People with cognitive impairment frequently demonstrate impaired gait, putting them at increased risks for falls and serious injury. (More)
Although gait abnormalities have been previously noted in dementia, their non-neurological correlates have not been examined. We used data on 900 consecutive outpatients assessed from 1994 to 1999 in the University of Nebraska Geriatric Assessment Clinic Data Base (UN-GAC) to examine the prevalence of gait disorders and the relationship of gait disorders to(More)
The accuracy of a dementia diagnosis by specialist physicians, as verified at an autopsy, is greater than 90% in many series. Donations of brains to the Maritime Brain Tissue Bank (MBTB) by individuals who did not have expert dementia diagnoses before death led us to investigate whether clinical features could also be detected retrospectively. Informants(More)