Correction: Prevalence of Cognitive Impairment Without Dementia. Ann Intern Med. 2009;151:291-292. doi: 10.7326/0003-4819-151-4-200908180-00024
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Published: Ann Intern Med. 2009;151(4):291-292.
In a recent article (1), an error was discovered in the total population estimate for the age group older than 90 years that was used to calculate the sample weights and the total number of individuals with cognitive impairment without dementia for 2002 in the United States. The sample weights have been recalculated by using the corrected population estimate, and the results in the article have been revised. A revised Table 3 (reprinted here) shows a slightly lower estimate of total prevalence of cognitive impairment without dementia due to the corrected smaller size of the age group older than 90 years. The revised weights do not change the conclusions reached by the authors, but they do slightly change many numeric values in the article. The revised sample weights and an explanation of the reason for their change can be found at http://hrsonline.isr.umich.edu/site_docs/userg/adams/ADAMSSampleWeights_Jun2009.pdf.
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