Hospitals in 25 states that chose to expand Medicaid under the Affordable Care Act treated fewer uninsured patients and charity cases in the first quarter ended March 31, according to a study released this week.

The study, conducted by the Colorado Hospital Association (CHA), looked at 465 hospitals in 30 states, 15 of which had expanded Medicaid and 15 that did not. It showed more people are finding coverage who previously didn't have any, rather than people with private insurance switching to public insurance under Medicaid's eased eligibility requirements. Researchers concluded that the previously uninsured represented the large majority of new Medicaid enrollees.

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