"The government and private insurers have been trying for years to move away from the fee-for-service system that pays doctors and hospitals based on the volume of tests they perform and treatments they prescribe. They want to replace it with contracts that reward quality and better outcomes.... The changes in the reimbursement model are rippling out to manufacturers of drugs and devices. The shift could help address a long-standing problem with medical advances: The benefits observed in carefully designed clinical trials don't always materialize when a treatment is deployed in the real world."

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