Group Health Research (IMAGE) Group Health Research Institute Caption Group Health Cooperative has been doing comparative effectiveness research since before it had a name. Now Group Health's research arm has changed its name from the Center for Health Studies to Group Health Research Institute. Credit Michelle Kindall Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.