Effect of On-site Facilities on Use of Diagnostic Radiology by Non-radiologists

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Abstract
This study uses self-reports from a nationwide sample of 5447 physicians in ten medical and surgical specialties to assess the impact of on-site facilities on the use of radiologic examinations by nonradiologists. Data from 169,559 patient visits show that when on-site radiologic facilities are available to nonradiologists, radiographs increase by a factor of 1.2 (internal medicine) to 1.7 (pediatrics). Use of radiologic examinations is up to four times greater for hospitalized compared with nonhospitalized patients and is slightly higher for hospital-based physicians and for younger physicians.

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