Memory Impairment and Mortality in a National Cohort of Older Persons

Joseph Lowry, Anissa Austin, Hasan Al-Sayegh, Ngosi Michael, Jian Zhang

Research output: Contribution to conferencePresentation

Abstract

<div class="line" id="line-5"> <b> Background: </b> The mortality pattern of individuals with impaired verbal memory (IVM) has not yet been well described. We sought to describe the risk of all&hyphen;causes, as well as specific causes of death associated with IVM.</div><div class="line" id="line-8"> <br/></div><div class="line" id="line-10"> <b> Method: </b> We used the data of 4151 nationally representative adults &ge;60&thinsp;years old who participated in the third National Health and Nutrition Examination Survey, 1988&ndash;1994, and completed one non&hyphen;contextual (i.e., word list memory) and one contextual delayed&hyphen;recall tests (i.e., short story recall). The participants were passively followed up through 31 December 2006. We determined the hazard ratio of death from all&hyphen;causes and specific cause through Cox proportional hazard regression.</div><div class="line" id="line-13"> <br/></div><div class="line" id="line-15"> <b> Results: </b> Severe and moderate IVM were present in 268 (6.5%) and 495 (11.9%) participants at baseline survey, and 2550 deaths occurred by the end of 18&hyphen;year follow&hyphen;up (median&thinsp;=&thinsp;12&thinsp;years). The medians of survival time adjusted for all&hyphen;causes death were 6.17(95%CI: 5.50, 6.92), 9.50 (8.92, 10.25), and 13.17 (12.75, 13.58) years, respectively for the individuals with severe, moderate, and no IVM. Severe IVM was significantly associated with death from cardio&hyphen;cerebral vascular diseases [hazard ratio&thinsp;=&thinsp;1.70, 95%CI&thinsp;=&thinsp;(1.36&ndash;2.12)], stroke [2.60 (1.69&ndash;3.99)], and Alzheimer's disease [3.50 (1.40&ndash;8.76)]. The shortened survival time of the participants with IVM was mainly driven by the deaths of cerebral&hyphen;cardiovascular diseases, which accounted for almost half of all deaths.</div><div class="line" id="line-18"> <br/></div><div class="line" id="line-20"> <b> Conclusion: </b> The predictability of memory scores to early cerebral&hyphen;cardiovascular deaths demonstrated that central challenge among individuals with cognitive impairment was cardiovascular diseases management.</div>
Original languageAmerican English
StatePublished - Apr 12 2012
EventSociety of Behavioral Medicine Annual Meeting and Scientific Sessions (SBM) -
Duration: Apr 22 2015 → …

Conference

ConferenceSociety of Behavioral Medicine Annual Meeting and Scientific Sessions (SBM)
Period04/22/15 → …

Keywords

  • Cardiovascular disease
  • Follow-up
  • Memory
  • Mortality

DC Disciplines

  • Epidemiology
  • Public Health

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