is narrative evidence or statistical evidence more effective?
OBJECTIVE: To determine the relative impact of incorporating narrative evidence, statistical evidence or both into patient education about warfarin, a widely used oral anticoagulant medication. METHODS: 600 patients receiving anticoagulant therapy were randomly assigned to view one of three versions of a video depicting a physician-patient encounter where anticoagulation treatment was discussed, or usual care (no video). The videos differed in whether the physician used narrative evidence (patient anecdotes), statistical evidence, or both to highlight key information. 317 patients completed both the baseline and post-test questionnaires. Questions assessed knowledge, beliefs and adherence to medication and laboratory monitoring regimens. RESULTS: All three approaches positively effected patients’ warfarin-related knowledge, and beliefs in the importance of lab testing; there was also some indication that viewing a video strengthened belief in the benefits of warfarin. There was some in
