Surgeon supply and healthcare quality: Are revision rates for hip and knee replacements lower in hospitals that employ more surgeons?
研究外科医生数量与医院髋膝关节置换术翻修率的关系，发现医生越多翻修率越高，且不受患者数量影响，对医疗政策制定者评估集中手术政策有参考价值。
We study the link between department-wide surgeon supply and quality of care for two major elective medical procedures. Several countries have adopted policies to concentrate medical procedures in high-volume hospitals. While higher patient volumes might translate to higher quality, we provide evidence for a positive relationship between surgeon supply and hospital revision rates for hip and knee replacement surgery. Hence, hospital performance decreases with higher surgeon supply, and this finding holds conditional on patient volumes.