Depression is a leading cause of disability among older adults which can change the scope of daily life for older adults and threaten their ability to live independently in the community. This dissertation explored task disability in older adults with depression in three studies. A unique aspect of the studies was the assessment of disability through performance-testing. The first study examined task disability patterns in a sample of older adults with depression being treated as inpatients (n = 60) or outpatients (n = 59). Rasch analysis revealed that the degree of disability for task domains (functional mobility [FM], basic activities of daily living [BADL], instrumental activities of daily living [IADL] with a greater physical component [IADLphysical], and IADL with a greater cognitive component [IADLcognitive]), and task items, was different for older women whose depression resulted in inpatient versus outpatient treatment. With the same sample, the second study examined the impact of information processing speed on task disability. The patients were separated into groups by speed of processing (slower patients, n = 76; faster patients, n = 23) based on their performance on the Trail Making Test B. Speed of processing was associated with severity of depression and both depression and slower speed of processing interfered more with effortful processing tasks (i.e., IADLcognitive and IADL-physical) and less with tasks requiring automatic processing (i.e. FM). The third study compared physician rated disability on the Global Assessment of Function (GAF) Scale with performance-disability observed on the Performance Assessment of Self-Care Skills (PASS) in a hospitalized community-based sample separated into subgroups by readmission status (readmit patients, n = 15; non-readmit patients, n = 43). There was a lack of concordance between the measures with only the GAF Scale showing significant reduction in disability at discharge. Findings from these studies suggest that for older adults with depression, there may be sentinel tasks which are disability indicators and those tasks may differ based on speed of processing. The lack of concordance between the disability measures suggests the need for consideration of performance-based testing of daily life tasks as a component of usual care.
| Identifer | oai:union.ndltd.org:PITT/oai:PITTETD:etd-11172005-084722 |
| Date | 17 November 2005 |
| Creators | Chisholm, Denise |
| Contributors | James J. Irrgang, PhD, Margo B. Holm, PhD, Joan C. Rogers, PhD, Charles F. Reynolds, III, MD |
| Publisher | University of Pittsburgh |
| Source Sets | University of Pittsburgh |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.library.pitt.edu/ETD/available/etd-11172005-084722/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to University of Pittsburgh or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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