We are receiving a lot of questions about relevant analyses in the Analyse-it Method Validation edition to help in evaluating new diagnostic tests in the fight against COVID-19. Below are some quick links that will help, but contact us if you have questions - we are working as normal.
Also see our latest blog post: Sensitivity/Specificity and The Importance of Predictive Values for a COVID-19 test
After changes in a process it is necessary to revise the control limits.
The data is filtered to the IQ and OQ phases.
New control limits are computed for the new phase of the process. You can see the
limits are much narrower and no-special cause variation is present.