WOODLAND HILLS, Calif.--(BUSINESS WIRE)--Dec. 16, 2004 A recent study published in Annals of Asthma, Allergy, and Immunology evaluated the effectiveness of a Health Plan Employer Data and Information Set (HEDIS(R)) asthma metric to predict asthma-related hospitalizations and ER visits in a managed care population. The study identified several important areas for improvement in the measure’s methodology and design. The study was conducted and co-authored by Health Benchmarks(R) (HBI) in collaboration with the American College of Asthma, Allergy, and Immunology.