The Compression of Comorbidity

Abstract
Epidemiologic evidence on the compression of morbidity issue suggests that despite the recent increase in longevity of older Americans, the age-specific prevalence rates for most chronic illnesses have not concomitantly declined. However, current morbidity survey methods may not be fully able to characterize the scope of illness, function, physiologic status, and homeostatic capacity of a population to the extent necessary to determine whether morbidity is actually being "compressed." This article considers some additional ways to assess long-term trends in population health status, emphasizing patterns of comorbidity and summary health measures, that may give insights into the overall biologic robustness of older persons.

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