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. Author manuscript; available in PMC: 2011 Sep 1.
Published in final edited form as: J Clin Epidemiol. 2009 Dec 7;63(9):960–969. doi: 10.1016/j.jclinepi.2009.09.006

Figure 1.

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.