Brooks C H
Health Serv Res. 1978 Spring;13(1):3-15.
Path analysis is applied to data on infant mortality, supplies of physicians and hospital beds, and population percentages of blacks and low-income families in 201 standard metropolitan statistical areas (SMSAs) to test the hypothesis that medical resources mediate the effects of racial composition and low income on infant mortality rates. The hypothesis is not supported for the SMSA data: direct effects of racial composition and low income on infant mortality are stronger than indirect effects. The use of SMSA data for analysis is contrasted with the use of county data in a discussion of study by Anderson, from which the hypothesis was drawn.
路径分析应用于201个标准大都市统计区（SMSA）的婴儿死亡率、医生供应、医院床位以及黑人与低收入家庭人口百分比的数据，以检验医学资源介导种族构成和低收入对婴儿死亡率影响的假设。对于SMSA数据，该假设未得到支持：种族构成和低收入对婴儿死亡率的直接影响强于间接影响。在讨论安德森的研究时，将使用SMSA数据进行分析与使用县数据进行了对比，该假设即源自安德森的研究。
