The Prevalence of Mild Cognitive Impairment in Diverse Geographical and Ethnocultural Regions: The COSMIC Collaboration

BACKGROUND: Changes in criteria and differences in populations studied and methodology have produced a wide range of prevalence estimates for mild cognitive impairment (MCI). METHODS: Uniform criteria were applied to harmonized data from 11 studies from USA, Europe, Asia and Australia, and MCI preva...

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Detalles Bibliográficos
Autores principales: Sachdev, Perminder S., Lipnicki, Darren M., Kochan, Nicole A., Crawford, John D., Thalamuthu, Anbupalam, Andrews, Gavin, Brayne, Carol, Matthews, Fiona E., Stephan, Blossom C. M., Lipton, Richard B., Katz, Mindy J., Ritchie, Karen, Carrière, Isabelle, Ancelin, Marie-Laure, Lam, Linda C. W., Wong, Candy H. Y., Fung, Ada W. T., Guaita, Antonio, Vaccaro, Roberta, Davin, Annalisa, Ganguli, Mary, Dodge, Hiroko, Hughes, Tiffany, Anstey, Kaarin J., Cherbuin, Nicolas, Butterworth, Peter, Ng, Tze Pin, Gao, Qi, Reppermund, Simone, Brodaty, Henry, Schupf, Nicole, Manly, Jennifer, Stern, Yaakov, Lobo, Antonio, Lopez-Anton, Raúl, Santabárbara, Javier
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4634954/
https://www.ncbi.nlm.nih.gov/pubmed/26539987
http://dx.doi.org/10.1371/journal.pone.0142388
Descripción
Sumario:BACKGROUND: Changes in criteria and differences in populations studied and methodology have produced a wide range of prevalence estimates for mild cognitive impairment (MCI). METHODS: Uniform criteria were applied to harmonized data from 11 studies from USA, Europe, Asia and Australia, and MCI prevalence estimates determined using three separate definitions of cognitive impairment. RESULTS: The published range of MCI prevalence estimates was 5.0%–36.7%. This was reduced with all cognitive impairment definitions: performance in the bottom 6.681% (3.2%–10.8%); Clinical Dementia Rating of 0.5 (1.8%–14.9%); Mini-Mental State Examination score of 24–27 (2.1%–20.7%). Prevalences using the first definition were 5.9% overall, and increased with age (P < .001) but were unaffected by sex or the main races/ethnicities investigated (Whites and Chinese). Not completing high school increased the likelihood of MCI (P ≤ .01). CONCLUSION: Applying uniform criteria to harmonized data greatly reduced the variation in MCI prevalence internationally.

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