Really easy, enjoyable process. You have 4 interviews back to back to back to back. The first one is a general overview of the company, clinical trials, and getting to know the hiring manager. Next was with someone who asked me basic stat questions like p-values, type I and II errors, null/alt hypotheses. Nothing too hard. The next was about SAS programming, your experience with it, and some minor questions like syntax and commands. The final is just with HR about next steps.