AstraZeneca Pharmaceuticals LP (NYSE: AZN) and HealthCore, Inc., the health outcomes research subsidiary of WellPoint, Inc. (NYSE: WLP), announced a collaborative agreement to conduct real-world studies designed to determine how to most effectively and economically treat disease

Unlike controlled clinical trials, real-world evidence studies use observational data such as electronic medical records, claims information and patient surveys. By examining data associated with the delivery of care, real-world analyses can assess treatment impact on hospital length of stay, readmissions, overall health status, cost of care and other key evidence-based outcomes.

A leader in health outcomes research, HealthCore maintains the largest data environment in the nation. HealthCore’s near real-time, fully-integrated data environment combines medical, pharmacy, laboratory results and other information drawn from 36 million enrollees in local Blue Cross and/or Blue Shield plans with concentrated populations in 16 states.