According to the study's findings, Oregon's expansion of eligibility requirements for Medicaid in the early 1990s resulted
in a huge influx of newly insured individuals, including many suffering from schizophrenia and other serious mental illnesses.
But in 2003, state officials attempted to rein in Medicaid spending, resulting in a virtual halving of the number of expansion-program
enrollees. This included more than 4,000 beneficiaries who had been treated with antipsychotic medication or had a psychiatric
hospitalization during the previous year.