[55] The INR of a 47- year-old man who had been receiving warfarin for nine months (7.5 mg every Tuesday and 5 mg ... and within two weeks his INR fell to 1.5. The patient denied any other changes ...

The tool was developed using anonymized data from more than 1,000 heart surgery patients who were administered warfarin at St. Michael's Hospital between April 2011—November 2019. Data included ...