Physicians' Services and the Division of Labor Across Local Markets
实证发现医生劳动分工程度在不同地区存在系统差异，专业化与当地医疗服务需求相关，且全科医生在人口多或老年人多的县执业时服务范围更窄。
This paper reports empirical evidence of systematic cross-locale variation in the degree of division of labor among physicians. A theoretical model-based on an individual producer's trade-off between increasing returns and falling marginal revenue within each activity-motivates the empirical tests. At two levels of aggregation, specialization is correlated with local demand shifters for medical services. At the individual level, the author finds systematic differences in the range of procedures performed within a specialty class. General practitioners working fewer hours, practicing in more populated counties, or practicing in counties with more elderly produce a narrower range of procedures. Copyright 1988 by University of Chicago Press.