Statistical test for clinical data? - (Oct/14/2013 )
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!
It looks like 2-way Chi-square analysis.
If you have the expression values available you can run a Kruskall-Wallis test (non-paramteric 1-way ANOVA) for change in expression versus groups I-IV. In this case the high/low gene expression binning which could be somewhat ambiguous is not required