Abstract
These analyses examined the relationship between dementia and comorbid conditions with respect to degree of functional impairment and emotional impact. Analyses were conducted using National Health Interview Survey (2001 through 2005) data from a subset of individuals aged > or =60 years with activity limitations attributed to dementia, senility, or Alzheimer disease compared with those whose limitations were attributed to other conditions. The mean number of limited activities was 6.84 (95% confidence interval: 6.48-7.20) for persons with dementia-related limitations and 4.87 (95% confidence interval: 4.81-4.93) for those with limitations not dementia related. Both groups reported similar prevalence of diabetes, acute myocardial infarction, heart disease, prostate cancer, breast cancer, angina, and emphysema; respondents with dementia-related functional limitations were more likely to report diabetes, depression or anxiety, and vision problems as being related to functional limitations. Persons with dementia-related functional limitations were also more likely than persons with non-dementia-related functional limitations to report feeling sad, hopeless, worthless, nervous, and that "everything is an effort." Improving or maintaining functional independence in patients with dementia will likely require a multifaceted approach across disease states. Additional research will help define the impact of dementia on the development and progression of functional limitations related to comorbidities.
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