Youden Index

Determine the overall benefit of using a diagnostic test

The Youden index is a fairly simple calculation. Add the sensitivity of a diagnostic test to the specificity of the same diagnostic test, then subtract 100 from that value. If the Youden index is not over 50%, then the test does not meet empirical benchmarks for being administered for diagnostic purposes. The Youden index is a measure of a diagnostic test's ability to balance sensitivity (detecting disease) and specificity (detecting health or no disease).
Here is the Youden Index formula:
The Youden index is a measure of the overall ability of a diagnostic test.
The cut-off point for having an acceptable Youden index is 50%. Any value below 50% denote an overall lack of the diagnostic test to detect either disease or health.
Back to Diagnostic Testing
Research Engineer Home Page

Hire A Statistician

$100.00
Buy Now

DO YOU NEED TO HIRE A STATISTICIAN?

Eric Heidel, Ph.D., PStat will provide you with statistical consultation services for your research project at $100/hour. Secure checkout is available with Stripe, Venmo, Zelle, or PayPal.

  • Statistical Analysis on any kind of project
  • Dissertation and Thesis Projects
  • DNP Capstone Projects
  • Clinical Trials
  • Analysis of Survey Data