Regional and practice variation in adherence to guideline recommendations for secondary and primary prevention among outpatients with atherothrombosis or risk factors in the United States: a report from the REACH Registry.

Background:To reduce atherothrombosis-related morbidity and mortality, implementation of guideline-recommended therapies for primary and secondary prevention is necessary. Few data are available for outpatients in actual clinical practice, especially those without known heart disease treated by phys