This is data about the local Children in Low-Income Families measure at Children's Centre level for Milton Keynes for 2010 and 2011.
Children in Low-Income Families Definition: The proportion of children living in families in receipt of out of work benefits or tax credits where their reported income is less than 60% median income. The proportion of children in poverty is calculated as:
Number of children living in families in receipt of CTC whose reported income is less than 60 per cent of the median income or in receipt of Income Support or (Income-Based) Job Seekers Allowance, divided by the total number of children in the area (determined by Child Benefit data).
All Children = All dependent children under the age of 20
More information can be found here: http://www.hmrc.gov.uk/statistics/child-poverty-stats.htm