Pharmacotherapy
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To assess the accuracy of warfarin dosing decisions and the degree of numeric bias between two point-of-care devices using a local reference laboratory's international normalized ratio (INR) as the standard measure, and to determine the relationship between dosing decisions and INR values obtained with the point-of-care devices. ⋯ Assessing dosing decisions yielded distinct, useful clinical information. The AvoSure device is associated with less systematic bias and a higher degree of clinical agreement with our reference laboratory measurement than those of the ProTime device.