The SMART system described in this issue's lead story draws socioeconomic and other data from a variety of sources, including KIDS Count, a national initiative tracking the status of children in the United States. The Kids Count data book and online database present a variety of indicators of child well-being at the State and national levels. For example, the latest data book shows that in 2004, 18 percent of children lived in poverty (up slightly from 17 percent in 2000), and 21 percent of children age 5 and younger lived in families classified as "working poor."

For access to statistical publications, national data sets, data analysis tools, and other statistical resources relevant to juvenile justice, visit OJJDP's online Statistical Briefing Book.