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What is a Data Warehouse?

Last year the Department of Employee Trust Funds began with a third–party administrator to build a "data warehouse" – a centralized, secure repository of data pertaining to the State of Wisconsin Group Health Insurance Program. At this point ETF and the vendor, Truven Health Analytics, are nearing completion of loading enrollment information, claims (e.g., medical, pharmacy, dental) and wellness data from 2014-2017 into the repository.

In general, the data collected will help ETF and the Group Insurance Board keep health insurance premiums manageable and improve members' health outcomes.

Benefits of a Data Warehouse

ETF will be able to closely monitor participating health plan and provider performance, compare findings to cost and quality measures, and develop incentives to improve performance.

In addition, ETF will use the data to better understand members' overall health needs and identify opportunities to improve health and quality of care. For example, a recent "snapshot" of member data provided statistics about:

  • The number of members who had – and did not have – preventive care visits and services in 2016

  • Overall adherence to care guidelines for such chronic conditions as coronary artery disease and diabetes

  • The number of members seeking care for low back pain, depression, asthma, etc., and associated cost trends

Please note that HIPAA privacy and security requirements governing the use of data will be strictly enforced. ETF and its consultants cannot access member-identifiable information in the data warehouse. In addition, member-level data will never be shared with employers. The GIB will be limited to reviewing summary reports on health plan performance, spending, utilization and member health outcomes.

For More Information
FAQ: Data Warehouse for Health Claims and Related Data