Children of Austerity: Impact of the Great Recession on Child Poverty in Rich Countries, Oxford University Press, http://dx.doi.org/10.1093/oso/9780198797968.003.0013. Child income poverty rate is usually defined as the proportion of children (0-17 year olds) that live in households with an equivalised income of less than a certain threshold below which all family members are considered to be poor. The focus is on the income situation of children relative to the average individual in the country, defined as the person with median income, not the median child (Corak, 2005|86i).