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Sociological Methods & Research
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Capturing Gender-Based Microsegregation

A Modified Ratio Index for Comparative Analyses

Iris Jerby

Tel-Aviv University, Israel

Moshe Semyonov

Tel-Aviv University, Israel, and University of Illinois-Chicago

Noah Lewin-Epstein

Tel-Aviv University, Israel

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 totally segregated occupations and sensitivity near the extremes. To capture the real essence of gender occupational segregation, it is necessary to examine rather detailed occupational categories. Such detailed occupational classification poses a problem for the ratio index since small occupations are more likely to be mono-gender occupations. The authors propose an alternative modified index that resolves both the singularity and the sensitivity problems by employing the "first-order approximation" of the logarithmic function. The modified index makes it possible to compute measures of microsegregation for detailed occupational categories. The advantages of the proposed index for comparative microsegregation analyses are illustrated and discussed.

Key Words: segregation index • gender segregation • comparative analysis

Sociological Methods & Research, Vol. 34, No. 1, 122-136 (2005)
DOI: 10.1177/0049124104269669
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This article has been cited by other articles:


Home page
 Sociological Methods ResearchHome page
D. B. Grusky and A. Levanon
Describing Occupational Segregation in Sparse and Incomplete Arrays
Sociological Methods Research, May 1, 2006; 34(4): 554 - 572.
[Abstract] [PDF]

Home page
 Sociological Methods ResearchHome page
I. Jerby, M. Semyonov, and N. Lewin-Epstein
On Measures of Gender Occupational Segregation: Statistical and Conceptual Considerations (a Response to Grusky and Levanon)
Sociological Methods Research, May 1, 2006; 34(4): 573 - 586.
[Abstract] [PDF]