I've been browsing the match lists a bit and noticed that in general, a lot of students tend to do their residencies at the hospitals associated with the school. I'm just wondering whether this is more due to the fact that A) med students tend to want to do their residencies at the same hospital as their med school rotations or because B) residency programs tend to selectively favor students from their corresponding med schools. I realize that it's probably due to both of these reasons, but which is the primary factor? If any current med students could offer some insight, that'd be great!