As part of our Target experimentation programme, I want to explore alternative ways to evaluate our tests by using our clickstream data. I want to understand the characteristics of our users when they first enter a test - device type, marketing channel, etc.
Can I use the post_tnt_action field (structured as activityID:experienceID:targettype|event ), filtering for event = 0 for hits where users are first entered into the test? I can't get the count of unique visitors to match when using this method (using post_visid_low and post_visid_low and the usual recommended excluded hit filters).