CALCULATE/COUNTROWS and date filter issue

[Betsy]

Hi!

I have a complicated model, where one of the things I have calculated is the number of times a student says "stop" to opt out of our service.  What I need to do now is look at these stops over the last 30 days, last 14 days, and last 24 hours. These filters work for other measures (# of responses, unique respondents) but not stops.

Sometimes they don't actually say stop, so I use the fact that they have been turned off (Active=FALSE) and that they sent a text message without an ID number attached (Package ID ="0") to calculate stop outs from two imported CSV files.

Stop Outs = CALCULATE(COUNTROWS('student_export'),'student_export'[active]=FALSE,'communicationresponse_export'[Package ID]="0")

To create the date filters, I made a date table, then calculated columns using syntax I found here for someone else's question. The filters themselves seem to work fine. The date table has a relationship with the communicationresponse table that the Package ID comes in the Stop Outs syntax above, but not with the student export table (the only dates in that table are when the student became active and when they expire, which I don't want the filters for). When I apply the date filters, the stop outs are undercounted.

Should I use something else to get stop outs, aside from CALCULATE(COUNTROWS)? I'm at a loss.

Thanks!

Betsy