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
Tests for the independence of 2 categorical variables and their properties and assumptions.
Uses the score statistic and computes an asymptotic p-value.
Uses the likelihood ratio statistic and computes an asymptotic p-value. Pearson X² usually converges to the chi-squared distribution more quickly than G². The likelihood ratio test is often used in statistical modeling as the G² statistic is easier to compare between different models.