I also applied to CU, University of Rochester, and Western Univ. of Health Sciences, but i won't hear from any of them for a while. It will probably be between Regis and Rochester, but we will see!
Anyways, as far as the interview, I was really happy with it. I just tried to emphasis my passion and desire to become a nurse and talked about why I would be a good nursing student (i.e. past experiences). The interviewer was super nice, and I just tried to think of it as a causal conversation more than an interview.
What do I think made me a strong candidate? I'm assuming good grades helped. I also had hospital and international volunteer experience. It really seems like they look at the whole person, so I think the interview was important.
Hope that helps!