Estimating Lorenz and concentration curves in Stata

by Ben Jann

Abstract: Lorenz and concentration curves are widely used tools in inequality research. In this paper I present a new Stata command called lorenz that estimates Lorenz and concentration curves from individual-level data and, optionally, displays the results in a graph. The lorenz command supports relative as well as generalized, absolute, unnormalized, or custom-normalized Lorenz or concentration curves, and provides tools for computing contrasts between different subpopulations or outcome variables. Variance estimation for complex samples is fully supported.