I have to produce a bar chart for % of patients who responded(ept = 1)
at each time point for each treatment group. Percentages for each
treatment/time point should be based on the total number of patients
in each treatment group. at each time point with a non-missing
response for ept. Ept has value of missing, 1 and 2.
There are 6 visits.
Can someone tell me how do i find out the percentages of patients as
per the above condition and plot a bar chart out of it.