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Regression-Based Estimates of Observed Functional Status in Centenarians

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Title: Regression-Based Estimates of Observed Functional Status in Centenarians
Language: English
Authors: Mitchell, Meghan B., Miller, L. Stephen, Woodard, John L., Davey, Adam, Martin, Peter, Burgess, Molly, Poon, Leonard W.
Source: Gerontologist. Apr 2011 51(2):179-189.
Availability: Oxford University Press. Great Clarendon Street, Oxford, OX2 6DP, UK. Tel: +44-1865-353907; Fax: +44-1865-353485; e-mail: jnls.cust.serv@oxfordjournals.org; Web site: http://gerontologist.oxfordjournals.org
Peer Reviewed: Y
Page Count: 11
Publication Date: 2011
Document Type: Journal Articles
Reports - Research
Education Level: Adult Education
Descriptors: Older Adults, Aging (Individuals), Performance Based Assessment, Functional Behavioral Assessment, Measurement Techniques, Observation, Reports, Comparative Analysis
Geographic Terms: Georgia
DOI: 10.1093/geront/gnq087
ISSN: 0016-9013
Abstract: Purpose of the Study: There is lack of consensus on the best method of functional assessment, and there is a paucity of studies on daily functioning in centenarians. We sought to compare associations between performance-based, self-report, and proxy report of functional status in centenarians. We expected the strongest relationships between proxy reports and observed performance of basic activities of daily living (BADLs) and instrumental activities of daily living (IADLs). We hypothesized that the discrepancy between self-report and observed daily functioning would be modified by cognitive status. We additionally sought to provide clinicians with estimates of centenarians' observed daily functioning based on their mental status in combination with subjective measures of activities of daily living (ADLs). Design and Methods: Two hundred and forty-four centenarians from the Georgia Centenarian Study were included in this cross-sectional population-based study. Measures included the Direct Assessment of Functional Status, self-report and proxy report of functional status, and the Mini-Mental State Examination (MMSE). Results: Associations between observed and proxy reports were stronger than between observed and self-report across BADL and IADL measures. A significant MMSE by type of report interaction was found, indicating that lower MMSE performance is associated with a greater discrepancy between subjective and objective ADL measures. Implications: Results demonstrate associations between 3 methods of assessing functional status and suggest proxy reports are generally more accurate than self-report measures. Cognitive status accounted for some of the discrepancy between observed and self-reports, and we provide clinicians with tables to estimate centenarians' performance on observed functional measures based on MMSE and subjective report of functional status.
Abstractor: As Provided
Entry Date: 2011
Accession Number: EJ918784
Database: ERIC
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  Data: Regression-Based Estimates of Observed Functional Status in Centenarians
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  Data: <searchLink fieldCode="AR" term="%22Mitchell%2C+Meghan+B%2E%22">Mitchell, Meghan B.</searchLink><br /><searchLink fieldCode="AR" term="%22Miller%2C+L%2E+Stephen%22">Miller, L. Stephen</searchLink><br /><searchLink fieldCode="AR" term="%22Woodard%2C+John+L%2E%22">Woodard, John L.</searchLink><br /><searchLink fieldCode="AR" term="%22Davey%2C+Adam%22">Davey, Adam</searchLink><br /><searchLink fieldCode="AR" term="%22Martin%2C+Peter%22">Martin, Peter</searchLink><br /><searchLink fieldCode="AR" term="%22Burgess%2C+Molly%22">Burgess, Molly</searchLink><br /><searchLink fieldCode="AR" term="%22Poon%2C+Leonard+W%2E%22">Poon, Leonard W.</searchLink>
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  Data: <searchLink fieldCode="SO" term="%22Gerontologist%22"><i>Gerontologist</i></searchLink>. Apr 2011 51(2):179-189.
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  Data: Oxford University Press. Great Clarendon Street, Oxford, OX2 6DP, UK. Tel: +44-1865-353907; Fax: +44-1865-353485; e-mail: jnls.cust.serv@oxfordjournals.org; Web site: http://gerontologist.oxfordjournals.org
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  Data: <searchLink fieldCode="DE" term="%22Older+Adults%22">Older Adults</searchLink><br /><searchLink fieldCode="DE" term="%22Aging+%28Individuals%29%22">Aging (Individuals)</searchLink><br /><searchLink fieldCode="DE" term="%22Performance+Based+Assessment%22">Performance Based Assessment</searchLink><br /><searchLink fieldCode="DE" term="%22Functional+Behavioral+Assessment%22">Functional Behavioral Assessment</searchLink><br /><searchLink fieldCode="DE" term="%22Measurement+Techniques%22">Measurement Techniques</searchLink><br /><searchLink fieldCode="DE" term="%22Observation%22">Observation</searchLink><br /><searchLink fieldCode="DE" term="%22Reports%22">Reports</searchLink><br /><searchLink fieldCode="DE" term="%22Comparative+Analysis%22">Comparative Analysis</searchLink>
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  Data: 10.1093/geront/gnq087
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  Data: 0016-9013
– Name: Abstract
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  Data: Purpose of the Study: There is lack of consensus on the best method of functional assessment, and there is a paucity of studies on daily functioning in centenarians. We sought to compare associations between performance-based, self-report, and proxy report of functional status in centenarians. We expected the strongest relationships between proxy reports and observed performance of basic activities of daily living (BADLs) and instrumental activities of daily living (IADLs). We hypothesized that the discrepancy between self-report and observed daily functioning would be modified by cognitive status. We additionally sought to provide clinicians with estimates of centenarians' observed daily functioning based on their mental status in combination with subjective measures of activities of daily living (ADLs). Design and Methods: Two hundred and forty-four centenarians from the Georgia Centenarian Study were included in this cross-sectional population-based study. Measures included the Direct Assessment of Functional Status, self-report and proxy report of functional status, and the Mini-Mental State Examination (MMSE). Results: Associations between observed and proxy reports were stronger than between observed and self-report across BADL and IADL measures. A significant MMSE by type of report interaction was found, indicating that lower MMSE performance is associated with a greater discrepancy between subjective and objective ADL measures. Implications: Results demonstrate associations between 3 methods of assessing functional status and suggest proxy reports are generally more accurate than self-report measures. Cognitive status accounted for some of the discrepancy between observed and self-reports, and we provide clinicians with tables to estimate centenarians' performance on observed functional measures based on MMSE and subjective report of functional status.
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