Who refuses the diagnostic assessment for dementia in primary care?

Department of Psychiatry, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, United States
International Journal of Geriatric Psychiatry (Impact Factor: 3.09). 06/2006; 21(6):556-63. DOI: 10.1002/gps.1524
Source: PubMed

ABSTRACT Early screening and detection of dementia in primary care remains controversial. At least half of the patients identified as cognitively impaired by screening instruments do not meet criteria for dementia and some patients refuse further evaluation following a positive screen. The aim of this study was to identify the characteristics of patients who refuse a clinical diagnostic assessment for dementia after screening.
Cross sectional study.
Seven primary care practice centers in Indianapolis.
Four hundred and thirty-four individuals aged 65 and older who screened positive for dementia with a mean age of 74.6, 67% women, and 68% African-American.
Patients' acceptance of undergoing a dementia diagnostic assessment that included neuropsychological testing, caregiver interview, and medical chart review.
Among patients with positive screening results for dementia, approximately half (47.7%) refused further assessment to confirm their screening results. In a bivariate analysis, possible factors associated with a higher probability of refusing dementia assessment were older age and better screening score. In a multiple logistic regression model, performing well on the temporal orientation of the screening instrument was associated with a higher probability of refusing diagnostic assessment for dementia (OR = 1.37; p = 0.001). Also, African-American patients aged 80 and older were more likely to refuse the diagnostic assessment than African-Americans less than 80 years of age (OR = 3.1, p < 0.001), while there was no significant age association for white patients (OR = 0.9, p = 0.728).
Older primary care patients who perceived themselves as having no cognitive symptoms refused dementia diagnostic assessment despite their positive screening results. We must improve our understanding of the decision-making process driving patients' beliefs and behaviors about the benefits and risks of dementia screening and diagnosis before implementing any broad-based screening initiatives for dementia.

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