What are you trying to measure / test with this information?
I set up a click tracking on side bars to measure CTR. I Want to see if the CTR changes if I exclude sessions that bounce really quickly, whicg I consider fake visits.
A couple options you could pursue:
- Integrate the experiment with Google Analytics and just look at time-on-page there.
Really, depends on your intent for the data. If you're wanting this as a data filter on the results page, then it's better to set up as a visitor dimension (but that's platinum only). If you're wanting to use it as a way to delay the experiment execution, there are other methods to accomplish that instead of an audience. Keep in mind that Optimizely only checks for experiment run validity on initial page load, it does not "watch".