I've gone and looked at the bloody 52 page report and those figures are the best performing 14 countries in the world, plus the arbitrary addition of UK and USA, and the number is the percentage of children who were below 60% of the median income in 2012. So it's basically a particular measure of inequality, rather than poverty.

Spain scores a healthy 36.3, and Greece 40.5, not forgetting our pals from Iceland on 31.6.