Managed care outcomes related to HEDIS measures are most commonly obtained through

The Healthcare Effectiveness Data and Information Set (HEDIS) is a widely used set of performance measures in the managed careindustry12. It is used by more than 90 percent of health plans to measure performance on important dimensions of care and service1. Just as important, it is absolutely crucial for meeting the information needs of health plans1. HEDIS measures are typically obtained through claims data12. Claims data are used because they are readily available, reliable, and can be used to track a health plan’s ability to manage health outcomes2.