Antithrombotic Therapy Practices in US Hospitals in an Era of Practice Guidelines

3778 hospitalized patients (mean age 66.1 years, 53.3% men) treated for atrial fibrillation, acute myocardial infarction, deep vein thrombosis, pulmonary embolism, or given prophylaxis for total knee replacement, total hip replacement, or hip fracture surgery between July 1, 2000, and June 30, 2003.

Antithrombotic therapy (including warfarin, aspirin, unfractionated heparin, low-molecular-weight heparin)

Adherence to guideline-recommended antithrombotic therapy practices