- Thread starter mob
- Start date

The null hypothesis is that the patients were test the same amount of times in both groups and I'd like to reject that hypothsis.

The problem is that the patients were not admitted for even amounts of time and if a patient is admitted for a longer time he will be examined more times.

I thought I'd compare the median amount of examinations- Mann Whitney?

and compare the mean amount/hour (could a T-test be appropriate? Just because opposed to amount of exams time is a contious variable)

I am not an expert in what you asking. I think you could add a mediating (another predictor) variable, time in the system, to control for this, but I am not sure that would work in this case. This is where having theory, past reports, would really help.