The indicator poverty rate simply reflects the proportion of children that does not meet the established threshold for the particular indicator. The domain poverty rate is consequently constructed along the lines of the union approach as aggregation procedure, considering a child to be poor in a particular domain when they are poor with respect to at least one of the individual indicators within that domain (Atkinson, 2003; Alkire and Foster, 2008). Consequently, the domain poverty rate represents the proportion of children that is poor within that domain, given the union approach.