Here is my problem:

I am being asked to solve P(R|C). C=number of patients who have completed treatment, and R=number of return patients. However, my understanding is that I need to know the intersection of P(C) and P(R) in order to solve P(R|C). But, to solve for the intersection, I need to know P(R|C). Is there a way to determine one without knowing the other?

Doctor | Number Patients Treated | Treatment Completed | Return Patients | P(Completed) | P(Return) | P(R|C) | ||

Dr. Jim | 2541 | 2134 | 704 | 0.8398268398 | 0.2770562771 | ? |