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NEUROLOGY 2004;63:739-741
© 2004 American Academy of Neurology
Brief Communications

Sensitivity and specificity of dementia coding in two Swedish disease registries

Ya-Ping Jin, MD PhD, Margaret Gatz, PhD, Boo Johansson, PhD and Nancy L. Pedersen, PhD

From the Department of Medical Epidemiology and Biostatistics (Drs. Jin, Gatz, and Pedersen), Karolinska Institute, Stockholm, and Department of Psychology (Dr. Johansson), University of Göteborg, Sweden; and Department of Psychology (Drs. Gatz and Pedersen), University of Southern California , Los Angeles.

Address correspondence and reprint requests to Dr. M. Gatz, Department of Psychology, University of Southern California, 3620 McClintock Ave., Los Angeles CA 90089-1061; e-mail: gatz{at}usc.edu

The authors investigated the sensitivity and specificity of dementia identification in two Swedish disease registries by using clinical diagnoses from two population-based studies as gold standards. The probability of dementia detected by the Inpatient Discharge Registry was 55% for prevalent patients and 31% for incident patients and was higher than detection by the Cause of Death Registry. Specificity was 98% for the Inpatient Discharge Registry and 100% for the Cause of Death Registry.

Received November 18, 2003. Accepted in final form March 26, 2004.

Additional material related to this article can be found on the Neurology Web site. Go to www.neurology.org and scroll down the Table of Contents for the August 24 issue to find the title link for this article.




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