From their website:
CDF's State of America's Children 2008 report, a compilation of the most recent and reliable national and state-by-state data on poverty, health, child welfare, youth at risk, early childhood development, education, nutrition and housing. The report provides a a statistical compendium of key child data showing epidemic numbers of children at risk: the number of poor children has increased nearly 500,000 to 13.3 million, with 5.8 million of them living in extreme poverty, and nearly 9 million children lack health coverage―with both numbers likely to increase during the recession. The number of children and teens killed by firearms also increased after years of decline.
According to the CDF report, children in America lag behind almost all industrialized nations on key child indicators. The United States has the unwanted distinction of being the worst among industrialized nations in relative child poverty, in the gap between rich and poor, in teen birth rates, and in child gun violence, and first in the number of incarcerated persons.