Westat 1976 study: data limitations inhibit extrapolation.
D006739:Hospital Administration; D007348:Insurance, Health / Q000191:economics*; D007349:Insurance, Health, Reimbursement / Q000191:economics*; D007351:Insurance, Liability / Q000191:economics*; D008318:Malpractice / Q000191:economics*; D006278:Medicare / Q000191:economics; D012306:Risk; D012449:Safety; D014481:United States