4.6 Article

Life expectancy with and without dementia in persons with mild cognitive impairment in the community

期刊

JOURNAL OF THE AMERICAN GERIATRICS SOCIETY
卷 70, 期 2, 页码 481-489

出版社

WILEY
DOI: 10.1111/jgs.17520

关键词

dementia; education; life expectancy; mild cognitive impairment; multistate model

资金

  1. Alzheimer Nederland
  2. ZonMW Memorabel [73305095005]
  3. Municipality of Rotterdam
  4. European Commission (DG XII)
  5. Ministry of Health, Welfare and Sports
  6. Ministry of Education, Culture and Science
  7. Netherlands Genomics Initiative (NGI)
  8. Research Institute for Diseases in the Elderly (RIDE)
  9. Netherlands Organization for Health Research and Development (ZonMw)
  10. Netherlands Organization for Scientific Research (NWO)
  11. Erasmus University Rotterdam
  12. Erasmus MC University Medical Center

向作者/读者索取更多资源

The study conducted on 648 community-dwelling individuals with mild cognitive impairment (MCI) and 6410 without MCI in the Rotterdam Study showed that total life expectancy for MCI decreases with age, with women and higher educated individuals living longer and spending more years with dementia. These findings suggest a more favorable prognosis for MCI in the general population compared to clinical observations, likely due to individuals with MCI in clinical settings not seeking medical attention in earlier stages.
Background Various clinical studies have provided estimates of life expectancy of patients with mild cognitive impairment (MCI) from outpatient clinics, but whether these apply to community-dwelling individuals at home or in primary care is uncertain. Methods Within the population-based Rotterdam Study, we studied life expectancy with and without dementia in 648 community-dwelling persons with MCI and 6410 without MCI. Participants aged 60 years and older were assessed for MCI at baseline (2002-2014) and subsequently followed for the onset of dementia and death. We used multistate life tables to determine age-specific life expectancy with and without dementia by sex, educational attainment, and MCI subtype. Results Total life expectancy for MCI ranged from 21.4 years (95% CI: 19.0-23.6) at age 60 to 2.6 years (1.6-3.6) at age 95. With advancing age, an increasing proportion of these years was lived with dementia (2.9 years [1.8-4.0] at age 60; 1.2 [0.2-2.2] at age 95). Women and higher educated individuals lived longer and lived more years with dementia. No differences in total life expectancy were observed by MCI subtype, although individuals with amnestic MCI lived a larger proportion of those years with dementia. Conclusions Prognosis of MCI, in terms of life years lived with and without dementia, is more favorable in the general population than described in prior clinical observations, due likely to a substantial proportion of individuals with MCI in the clinic not seeking medical attention in an earlier stage.

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