title: Reply to Guido Erreygers and Tom Van Ourti's comment on 'The concentration index of a binary outcome revisited'.
authors.affiliation: Development Research Group, The World Bank, Washington, DC, USA. awagstaff@worldbank.org
authors.forename: Adam
authors.initials: A
authors.lastname: Wagstaff
mesh_terms: D003627:Data Interpretation, Statistical; D054624:Health Status Disparities; D006305:Health Status Indicators; D054625:Healthcare Disparities / Q000191:economics*; D006801:Humans; D012923:Social Class