title: Does cost information availability reduce physician test usage? A randomized clinical trial with unexpected findings.
mesh_terms: D019411:Clinical Laboratory Techniques; D003365:Costs and Cost Analysis; D003955:Diagnostic Tests, Routine / Q000191:economics*; D005246:Feedback; D005260:Female; D006746:Hospital Bed Capacity, 500 and over; D006801:Humans; D008297:Male; D008505:Medical Staff, Hospital / Q000523:psychology*; D008875:Middle Aged; D009820:Ohio; D011859:Radiography; D011897:Random Allocation