As for the fact that this data is still being gathered because it takes time for people's lives to change

I disagree with this. My intuition, supplemented by experience in somewhat analogous religious retreats, is that change happens easily in the camp environment and the question is how much of that will be inculcated enough to survive once the return to life happens.

I'd say it takes time to be sure people's lives have changed permanently, but not too much time for them to change.