Data on food insecurity is derived for the Gallup World Poll, in which individuals aged over 15 report on their household experiences. This means the child-centeredness of the indicators from this survey can only be partial, as they are interpreted as proportions of children living with individuals in households reporting specific conditions/experiences, rather than household experiences. Health data, as with previous studies (OECD, 2009, UNICEF, 2007 and others) are most prevalent, and the availability of surveys and series that included different estimates (for example, infant mortality estimates (before age 1 for instance, or age 5 even), or a range of health behaviours (drug use, sexual debut, and smoking)) forced a selection of indicators that 'best fit' the selection criteria outlined above (in consultation with the Report Card Advisory Board members).