A Unified Structural Equation Modelling Approach for the Decomposition of Rank-Dependent Indicators of Socioeconomic Inequality of Health

Roselinde Kessels, Guido Erreygers

Research output: Working paper / PreprintWorking paper


We present a unified structural equation modelling framework for the regression-based decomposition of rank-dependent indicators of socioeconomic inequality of health and compare it with a simple ordinary least squares regression. The structural equation modelling framework forms the basis for a proper use of the most prominent one- and two-dimensional decompositions and provides an argument for using the bivariate multiple regression model for two-dimensional decomposition. Within the structural equation modelling framework, the two-dimensional decomposition integrates the feedback mechanism between health and socioeconomic status and allows for different sets of determinants of these variables. We illustrate the structural equation modelling approach and its outperformance of ordinary least squares using data from the 2011 Ethiopian Demographic and Health Survey.
Original languageEnglish
Number of pages21
Publication statusPublished - 1 Jan 2015
Externally publishedYes

Publication series

SeriesWIDER Working Papers

JEL classifications

  • c36 - Multiple or Simultaneous Equation Models: Instrumental Variables (IV) Estimation
  • d63 - Equity, Justice, Inequality, and Other Normative Criteria and Measurement
  • i00 - Health, Education, and Welfare: General


  • inequality measurement
  • Concentration Index
  • decomposition methods
  • structural equation modelling

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