Health Employer Data Information Set (HEDIS®), the Consumer Assessment of Health Plans Study (CAHPS®), and the

to track health plan performance. However, many relationships among these measures are unknown. We found significant rela tionships between four HEDIS ® measures and many items in the CAHPS ® measure as well as items in HOS concerning benefi ciary general health ratings. Our study suggests that interpretation of performance data is improved by integrating access, ef fectiveness of care, beneficiary experience, health status, and risk measures into an analytic framework