Comparative studies of occupational sex segregation have employed a variety of measures to estimate the extent of segregation across labor markets. In this article, the authors focus on two intrinsic limitations of the ratio index, which is derived from the log-linear framework: singularity for...

In a recent article (2005), the authors proposed the first-order approximation (FOA) index for the measurement of gender occupational segregation across detailed occupational categories. The FOA index can remedy the two inherent limitations—sensitivity and singularity—associated...