In a wide-ranging look at how children have fared in their first decade of life, a study to be released today offers a promising picture of American childhood: Sixth-graders feel safer at school. Reading and math scores are up for 9-year-olds. More preschoolers are vaccinated. Fewer are poisoned by lead.  

The analysis, which created a composite index of more than 25 key national indicators, reports an almost 10 percent boost in children’s well-being from 1994 to 2006. This overall improvement comes in spite of two significant negative trends: increased rates of childhood obesity and low-birth-weight babies. 

“There are some really encouraging signs of progress,” said Ruby Takanishi, president of the nonprofit Foundation for Child Development, which funded the research. “I think it’s important as a country . . . to see that there are things that parents can do, that government can do, that institutions can do, to make measurable differences for children. 

“Experts familiar with the report credited shifts in government policy, in the economy and in parenting for the advances highlighted in the study, done by Kenneth C. Land, a Duke University sociologist and demographer. But they also cautioned that significant problems remain and that the recent economic downturn could take a toll. 

Andrew Cherlin, a professor of sociology and public policy at Johns Hopkins University, said the greatest progress tracked by the report occurred before the nation’s economy slowed in 2001. “With the economy weakening further, we may see an additional slowing of the improvement or perhaps even some backsliding,” he said. 

The report brought together a broad collection of mostly federal data, much of it from the Centers for Disease Control and Prevention, the Census Bureau, and the Education and Justice departments. When figures were not available for some years, the report used estimates. 

The study is unusual for its melding of trend lines over 12 years: in education, health, safety, economics, social relationships and community involvement. The authors said the idea was to examine how the younger half of American children is doing — apart from generally improving statistics on teenage pregnancy and substance abuse. 

The report showed, for example, that mortality rates for children ages 1 to 4 have declined by one-third, from 42.9 per 100,000 in 1994 to 28.1 in 2006. Land said possible reasons include better medical care and nutrition, mandatory use of car seats and safer playground equipment. 

The homicide rate for children ages 5 to 9 dropped by half, from 1.2 per 100,000 in 1994 to 0.6 in 2005. “Even for relatively rare events, that’s still good news,” Land said.Another statistic that stood out was in the number of sixth-grade students who said they feared attack or harm at school, or on the way to or from school. The report showed a 36 percent decline, from 14.3 percent in 1995 to 9.1 percent in 2006. 

That progress came as fewer mothers smoked during pregnancy, with statistics showing a decline from 14.6 percent in 1994 to 9.3 percent in 2006, also a 36 percent drop.Craig Ramey, director of the Center on Health and Education at Georgetown University, said he took heart from the findings: “We still have quite substantial levels of problems to deal with, but isn’t it nice to see some trend lines that say some programs are having impact?”  

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