Fig. 3From: Low dose compared to variable dose Warfarin and to Fondaparinux as prophylaxis for thromboembolism after elective hip or knee replacement surgery; a randomized, prospective studyINRs for patients in Arm A receiving variable dose warfarin. These patients were studied twice per week during weeks 1, 2 and 3, as indicated by “week 1a” and “week 1b”, etcBack to article page