Hi Christine,
Good work! I think your questions are strong and will elicit the appropriate response from the clinicians. I think you should maybe consider alternative medications that the clinicians might prescribe if they are unsure about anti-coagulants for this population. I like Kevin's idea of providing scenarios, but maybe you could ask them for a scenario in which they would prescribe OAC for patients with AF and when they would not prescribe OAC. This might have some useful results. Just a thought but overall well done.