I am trying to figure out if a new procedure change implemented between year 1 and year 2 has caused a delay in the procedure being administered. I have a procedure start time and procedure end time which are both time. formatted, and subtracted the difference to create a variable = duration between start and finish times (which is also formatted as a time). I would like to find the average of these durations, but proc means does not maintain the time format. I have searched several threads and tried many of their suggestions but have not yet found a solution. I have tried doing an output= option with proc means, but I'm not sure this is exactly what I need because ideally I would like to be able to calculate different averages of duration based on other different variables/strata in addition to year. Thanks for your help!
... View more