yeah that would make sense. I guess from the standpoint we use at my job which isn't academic rigor - it's rigorous enough to use as a valuable piece of information in a larger business decision. From that standpoint, I would totally do the date of policy change as the cutoff b/c it's NOT arbitrary - it's when the policy changed. When I start adding days to that, I then DO have to demonstrate why I selected 7 days for appointment setting instead of 8,9,10,15, etc. Then I also have to demonstrate why I added 1 or 2 months to that for immunity to kick in and why did I select 1 month and not 2 months or should it have been 1.653 months? Should it be the same for every single person? Do I need to research whether a state was slow with their appointment setting systems and change the values for just that state? Why does one state get a special value but others don't? Etc etc.