Rate of progression of mild cognitive impairment to dementia – meta‐analysis of 41 robust inception cohort studies

Acta Psychiatrica Scandinavica - Tập 119 Số 4 - Trang 252-265 - 2009
Alex J. Mitchell1, M. Shiri‐Feshki2
1Liaison Psychiatry, Leicester Partnership Trust and University of Leicester, Leicester, UK.
2General Adult Psychiatry, Nottinghamshire Healthcare NHS Trust, Nottinghamshire, UK

Tóm tắt

Objective: To quantify the risk of developing dementia in those with mild cognitive impairment (MCI).

Method: Meta‐analysis of inception cohort studies.

Results: Forty‐one robust cohort studies were identified. To avoid heterogeneity clinical studies, population studies and clinical trials were analysed separately. Using Mayo defined MCI at baseline and adjusting for sample size, the cumulative proportion who progressed to dementia, to Alzheimer’s disease (AD) and to vascular dementia (VaD) was 39.2%, 33.6% and 6.2%, respectively in specialist settings and 21.9%, 28.9% and 5.2%, respectively in population studies. The adjusted annual conversion rate (ACR) from Mayo defined MCI to dementia, AD and VaD was 9.6%, 8.1% and 1.9%, respectively in specialist clinical settings and 4.9%, 6.8% and 1.6% in community studies. Figures from non‐Mayo defined MCI and clinical trials are also reported.

Conclusion: The ACR is approximately 5–10% and most people with MCI will not progress to dementia even after 10 years of follow‐up.

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Acta Psychiatrica Scandinavica

Tập 119 Số 4

252-265

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