Letters
TYM and Alzheimer’s disease
Too many false positives
BMJ 2009; 339 doi: https://doi.org/10.1136/bmj.b2828 (Published 15 July 2009) Cite this as: BMJ 2009;339:b2828
- Stephen L Black, retired (emeritus) professor of psychology1
- 1Bishop’s University, Sherbrooke, Quebec, Canada J1M 1Z
- sblack{at}ubishops.ca
Brown and colleagues report 93% sensitivity and 86% specificity for their self administered screening test for Alzheimer’s disease.1 They conclude that “it is a powerful and valid screening test for the detection of Alzheimer’s disease.”
However, doctors and lay people are often confused by …
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