Background: Many of the large ongoing national surveys of the U.S. population contain a question that asks for the respondent's self-reported health status: "excellent," "very good," "good," "fair" or "poor." These surveys could be used to conduct cost-utility analyses of health care policies,...

Background: Anticoagulation therapy with warfarin is widely considered the standard of care for stoke prophylaxis in patients with atrial fibrillation who are at high risk of stroke. Community-based studies in the US have reported that the effectiveness of anticoagulation varies by management...

Background: The majority of individuals with allergic rhinitis in the US take first-generation antihistamines (FGAs). Although FGAs have been proven effective in alleviating allergic rhinitis symptoms, they have been associated with an increased risk of motor vehicle, aviation and occupational...