Can I do this in Analytics?

We just ran a special guided tour for the month of February and we are interested in seeing how many of the people who signed up for it were new to us. I ran the Attendance report and saved it as a list and then used an output set that included the constituent create date. But I feel like there must be some way in Analytics to see for how many people this was the first event they signed up for. I'm a bit rusty on analytics, but thought I'd see if anyone else has been looking at this kind of data this way.

Thanks!

Anne