Good Afternoon,

If anyone could give me advice I would really appreciate that. I know it is going to be something very basic or a command I just haven't come across before. I have seperated my patient ID as seen in column 1. I want to run a Wilcoxon signed rank test on on patient 1 between chemostage 0 and 2 (should be 1), and then 2-3 to see if there's a difference in my GLS variable and EF variable.

How do I separate the patients when running the tests? rather than what's been happening where it's run all of the patients I have on my dataset. (I will also need to separate the chemostages. But hopefully this is similar)

Hope you're able to help! i would appreciate it!