Of all the groups proposed above, cancer is the most complex for assigning people to groups. This is because cancer is bimodal, and many people will likely move in and out of the group several times in their lives. This is not the case for the other groups, where the vast majority of people will not move out of the group once they are in it, and the ones that do can be dealt with on an individual basis.
Because of this, we propose that cancer be a special type of group. It will still be included in the analysis as its own group; however, anyone with an active diagnosis of cancer, or up to five years after an active treatment for cancer, will stay in their home group and receive supplementary care (this has to be decided on a local level). The supplementary care will include additional care coordination services to help the individual navigate their cancer treatment, as well as extra finances for the provider networks providing their care.