Letters
Clinical prediction rules
Assessing properly the usefulness of clinical prediction rules and tests
BMJ 2012; 344 doi: https://doi.org/10.1136/bmj.e1238 (Published 21 February 2012) Cite this as: BMJ 2012;344:e1238- Huw Llewelyn, general physician and endocrinologist1
- 1Nevill Hall Hospital, Abergavenny NP7 7EG, UK
- huw.llewelyn{at}orange.net
Clinical prediction rules and other “tests” should be assessed not only in terms of sensitivity and specificity,1 which show only how a test detects a single diagnosis in a defined population. Sensitivity is often set high and specificity low, so that a positive result suggests only a differential diagnosis. A …
Log in
Log in using your username and password
Log in through your institution
Subscribe from £173 *
Subscribe and get access to all BMJ articles, and much more.
* For online subscription
Access this article for 1 day for:
£38 / $45 / €42 (excludes VAT)
You can download a PDF version for your personal record.