There is no number, statistical or otherwise, with any real data to back it up as far as any absent spouse returning. It really doesn't matter. Choosing to stand or wait it out is a very personal decision and should be based on your commitment rather than a number that has been tossed into the ring.
You are right, there isn't any real study or data. I'm just going by what I have seen on here, and you have been here longer than I, a lot longer! Unless I have overlooked something though, it can't be any higher than what I said.
