Trying to identify First Time Buyers (FTB)

I'm having a block.    I was trying to find First Time Buyers or those folks who have not attended in the last 5 years.   So I did a simple list looking at the Ticket History Perf Date (and I've done with unique perf =>1 and another without).   

I then take that list and create another list of this FY performances and ask for  those that does not have the list of prior ticket buyers.  

However, when I run it in T-stats, I'm still finding folks in the list that have prior ticket purchases in the 5 years I thought I was suppressing.

What am I missing?   Is it because history doesn't have the future performance dates yet?   Thanks

Parents
  • Using the method I had described I ran the list thru T-Stats looking only for the folks that should have been suppressed.  What I found is all of them were in original list  -- not certain what these 341 had that caused them to suppress.   I created a second step when I save the offending records to a list and suppress them a second time which seems to work.
     
    With this I don’t know where to ask what could be happening.
     
Reply
  • Using the method I had described I ran the list thru T-Stats looking only for the folks that should have been suppressed.  What I found is all of them were in original list  -- not certain what these 341 had that caused them to suppress.   I created a second step when I save the offending records to a list and suppress them a second time which seems to work.
     
    With this I don’t know where to ask what could be happening.
     
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