Evaluation of patients' knowledge about anticoagulant treatment.

70 consecutive patients newly referred to an anticoagulant clinic in a 580-bed district general hospital in London over six months. 51% male, 54% aged below 46 years.

Anonymous self-completed questionnaire evaluating knowledge of anticoagulation (mode of action of warfarin, adverse effects, drugs to avoid, action if bleeding/bruising, alcohol consumption)

Patients' knowledge about anticoagulation and information received on six items of anticoagulation counselingpatient reported