Hello, I am looking for what type of statistical test to use. I am using TCGA data, and have two groups of patients (grouped by high and low expression of a certain gene). I have clinical data (like whether they have stage I, II, III, or IV cancer) and am comparing the two groups. So for example, if group 1 has more patients with Stage IV cancer than group 2, how do I determine if this is statistically significant?
Thanks in advance!