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About the Oregon Health Study

The Oregon Health Study is examining the effects of health insurance on individuals' access to and utilization of heath care, its effect on family finances, and ultimately its role in improving the health of a population.

In April 2008, Oregon's Medicaid agency determined that it had enough funds to provide health insurance to an additional 10,000 uninsured low-income adults through the Oregon Health Plan Standard (OHP) program. To be as fair as possible, the state decided to open a reservation list for a set period of time and then draw names to determine who would receive an OHP application and who would not.

The Oregon Health Study will be conducted for at least three years in order to determine the effects of health insurance on health, health care utilization, and other outcomes.

Importance

The OHS is the first randomized controlled experiment to examine the causal effects of having some type of insurance coverage versus having no insurance at all.

The RAND Health Insurance Experiment, conducted more than 30 years ago, was also a randomized controlled study of insurance, but no one in the RAND experiment was assigned to a "no coverage" group.

The OHS will provide policymakers with timely information on the effects of expanding access to health insurance both on the individual and system levels.

This site is managed by the Center for Outcomes Research and Education at Providence Health & Services.
Oregon Health Study   |    5211 NE Glisan St   |    Portland OR 97213   |    877-215-0686   |    info@oregonhealthstudy.org

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