I am doing a health interventional study in the community. I calculate the "pre-intervention" proportion of behavior of the community before applying the interventions. And after 1 years of various interventions applied at different times to the community, i do a post intervention proportion of the health behaviour. Now I want to compare these two proportion and see if the interventions significantly improve the health behaviour in the community.
Please note that the community population can change a little over the time when pre and post-test were done by way of moving in/out, participating/not participating.
yamg