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Blaum, C., Mary Beth Ofstedal, and Jersey Liang. 2002. "Low Cognitive Performance, Comorbid Disease, and Task-Specific Disability: Findings from a Nationally Representative Survey." Journals of Gerontology Series A: Biological and Medical Sciences, 57(8): M523-M531.
Blaum, Ofstedal and Liang evaluate the association of low cognitive performance (LCP) with both chronic diseases and conditions, and with difficulties in a broad array of task-specific functioning and disability measures in older adults. Low cognitive performance coexists with multiple chronic diseases and condition. Chronic diseases and condition attenuate the relationship between LCP and some task difficulties. LCP should be considered and important comorbid condition associates with both chronic diseases and disability that substantially increases the health burden of many older adults who are poorly equipped to handle it.