the rightsbased approach is also used for the study comparing child wellbeing in oecd countries carried out in the context of the unicef innocenti report cards and on child wellbeing in rich countries bradshaw et al many studies have used relative deprivation by defining deprivation based on the overall distribution of the indicators selected eg barnes and wright bradshaw et al notten and roelen zelinsky similarly barnes and wright define child poverty as the lack of items essential for children to have an acceptable standard of living