HUTCHENS: Stata module to calculate the Hutchens `square root' segregation index with optional decompositions by subgroup
Stephen P. Jenkins
hutchens computes the `square root' segregation index proposed by Hutchens (International Economic Review, 2004) from individual-level data. Hutchens shows that this index, call it S, satisfies seven desirable properties for a good numerical measure of segregation. In particular, S is additively decomposable by population subgroup: total segregation may be expressed as the sum of within-group segregation (a weighted sum of S across subgroups) plus between-group segregation. S lies on the unit interval, with zero representing the complete absence of segregation, and one representing complete segregation. If two distributions are unambiguously ordered according to a pair of (non-intersecting) segregation curves, then S will also order the distributions in the same way.
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