Posted by Sten Westgard, MS
So here's a Normalized Method Decision chart for a cholesterol method.
Which method would you choose?
Well, what if this was the same method, but just plotted with different quality requirements?
That's in fact what this is. It's the exact same CV and Bias data, but each time a different quality requirement is imposed. The Normalized Method Decision chart changes the operating point based on the context of the quality requirement.
It helps you realize what a big difference exists between different quality requirement sources. Under one set of goals, this method would be unacceptable. Under another set of goals, this is a world class method.
Now, which quality requirement is the right one to use? See more about this at the essay Choosing the Right Goal - an example.
When you subscribe to the blog, we will send you an e-mail when there are new updates on the site so you wouldn't miss them.
For over 25 years, WESTGARD QC has provided the latest news, education, and tools in the quality control field. Our goal is to bring tools, technology and training into today's healthcare industry — by featuring QC lessons, QC case studies and frequent essays from leaders in the quality control area. This is also a reference source for quality requirements, including CLIA requirements for analytical quality. This website features the best explanation of the Multirule ("Westgard Rules") and how to use them. For laboratory and healthcare professionals looking for educational and reference material in the quality control field.
THIS IS THE WEBSITE FOR YOU!
Comments