Survival following a diagnosis of Alzheimer disease

被引:248
作者
Brookmeyer, R
Corrada, MM
Curriero, FC
Kawas, C
机构
[1] Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Dept Biostat, Baltimore, MD 21205 USA
[2] Johns Hopkins Univ, Sch Med, Dept Neurol, Baltimore, MD 21205 USA
[3] Univ Calif Irvine, Inst Brain Aging & Dementia, Irvine, CA 92717 USA
关键词
D O I
10.1001/archneur.59.11.1764
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Context: Survival following a diagnosis of Alzheimer disease (AD) is important information for health planners, caregivers, patients, and their families. Objectives: To estimate the duration of survival following a diagnosis of AD and to determine the effect of AD on life span. Design, Setting, and Participants: Follow-up of participants of the Baltimore Longitudinal Study of Aging who were older than 55 years (January 1, 1985-September 30, 1999). Main Outcome Measures: Survival duration. Results: The median survival time following a diagnosis of AD depended strongly on the patient's age at diagnosis. The median survival times ranged from 8.3 years for persons diagnosed as having AD at age 65 years to 3.4 years for persons diagnosed as having AD at age 90 years. There were no significant differences between men and women in survival after having a diagnosis of AD. Diagnoses of AD at ages 65 and 90 years were associated with approximately a 67% and 39% reduction in median life span, respectively. Conclusions: The effect of a diagnosis of AD on life span depends crucially on the age of the person when AD is diagnosed. Caregivers, patients, and their families could plan on a median life span as long as 7 to 10 years for patients whose conditions are diagnosed when they are in their 60s and early 70s, to only about 3 years or less for patients whose conditions are diagnosed when they are in their 90s.
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页码:1764 / 1767
页数:4
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