Figure 1.
Percent of patients with predicted dose that was within 20% of the actual stable therapeutic dose of warfarin. (19)
The dose estimates are shown according to three actual-dose groups: low dose (≤21 mg per week), intermediate-dose (>21 to <49 mg per week), and high-dose (≥49 mg per week). The fixed dose was 35 mg per week. With the fixed-dose approach, none of the estimates for the patients in the low dose and high-dose groups were within 20% of the actual dose.