期刊
AGING & MENTAL HEALTH
卷 22, 期 10, 页码 1272-1278出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/13607863.2017.1280767
关键词
Dementia; epidemiology; prevention; risk factors; cohort study
资金
- Alzheimer Nederland [WE.15-2015-01]
- Alzheimer's Society UK [WE.15-2015-01]
- Abbeyfield Society
- National Institute for Health Research
- CC75C
Objectives: To investigate the association between modifiable risk and protective factors and severe cognitive impairment and dementia in the very old. Additionally, the present study tests the predictive validity of the LIfestyle for BRAin health' (LIBRA) score, an index developed to assess an individual's dementia prevention potential.Method: Two hundred seventy-eight individuals aged 85years or older from the Cambridge City over-75s cohort study were followed-up until death. Included risk and protective factors were: diabetes, heart disease, hypertension, depression, smoking, low-to-moderate alcohol use, high cognitive activity, and physical inactivity. Incident severe cognitive impairment was based on the Mini-Mental State Examination (score: 0-17) and incident dementia was based on either post-mortem consensus clinical diagnostic assessments or death certificate data. Logistic regressions were used to test whether individual risk and protective factors and the LIBRA score were associated with severe cognitive impairment or dementia after 18years follow-up.Results: None of the risk and protective factors or the LIBRA score was significantly associated with increased risk of severe cognitive impairment or dementia. Sensitivity analyses using a larger sample, longer follow-up period, and stricter cut-offs for prevalent cognitive impairment showed similar results.Conclusion: Associations between well-known midlife risk and protective factors and risk for severe cognitive impairment or dementia might not persist into very old age, in line with suggestions that targeting these factors through lifestyle interventions should start earlier in life.
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