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Despite the large burden of chronic disease in older persons, especially those with disability, little research has documented changes in symptomatology over short periods of time. Additionally, although it has been demonstrated that medical conditions strongly affect functional level, short-term worsening in condition status has not been investigated for its impact on functional change.

the journals of gerontology. series a, biological sciences and medical sciences

New and Worsening Conditions and Change in Physical and Cognitive Performance During Weekly Evaluations Over 6 Months: The Women's Health and Aging Study