250
Participants
Start Date
December 31, 2006
Primary Completion Date
January 31, 2010
Study Completion Date
February 28, 2010
Dosing warfarin every 12 weeks, sham INRs 2 out of 3 times
Warfarin is dosed according to INR to maintain INR 2.0-3.0 or for mechanical mitral valves or mechanical aortic valves with atrial fibrillation INR 2.5-3.5
HHS - General Hospital, Thrombosis Service, Hamilton
The Physicians' Services Incorporated Foundation
OTHER
Hamilton Health Sciences Corporation
OTHER