Get FREE U.S. Shipping on $75 Orders*

Comparing diagnostic tests: a simple graphic using likelihood ratios.

1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)
Loading...

Abstract

The diagnostic abilities of two or more diagnostic tests are traditionally compared by their respective sensitivities and specificities, either separately or using a summary of them such as Youden’s index. Several authors have argued that the likelihood ratios provide a more appropriate, if in practice a less intuitive, comparison. We present a simple graphic which incorporates all these measures and admits easily interpreted comparison of two or more diagnostic tests. We show, using likelihood ratios and this graphic, that a test can be superior to a competitor in terms of predictive values while having either sensitivity or specificity smaller. A decision theoretic basis for the interpretation of the graph is given by relating it to the tent graph of Hilden and Glasziou (Statistics in Medicine, 1996). Finally, a brief example comparing two serodiagnostic tests for
Lyme disease is presented. Published in 2000 by John Wiley & Sons, Ltd.

Stat Med. 2000 Mar 15;19(5):649-63. Comparative Study

ProHealth CBD Store

 

1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)
Loading...



Leave a Reply