Sensitivity or specificity? And how to evaluate a test?
The Wise son: One may find this topic as confusing, and indeed it is very confusing!The goal of a diagnostic test is to define whether a person has the disease or not. As statisticians, we are here to evaluate the performance of such diagnostic tests. This is achieved by comparing the test results to the […]
When to use a trend test?
The Wise son: Aren’t we all just trying to find trends everywhere? I hope you all have a positive trend in your life. A trend test will help us assess whether our outcome of interest has a linear pattern across the groups of some categorical variable. Trend tests are relevant when dealing with more than […]