I have some data that look like: These data show between case (spinal cord injury) and control the number of drugs that patients in these populations were prescribed at any given time. I'm looking for a p-value to determine that the cases were prescribed more than >= 5 drugs at a significantly higher rate than the controls. It doesn't really matter to the study that someone is on 30 drugs, just that it's more than five. What's the best test to use to get a p value that the cases are prescribed >=5 drugs vs. the controls?
EDIT:: CASE N = 11571 CONTROL N = 9494