One of the original titles of our paper was "Beyond Socioeconomic Status." It's a key point because, even though it is true that you're more likely to be overweight or obese if you're in one of those lower socioeconomic groups, the biggest proportion of children who are overweight or obese in the country are not in one of those so-called disadvantaged groups. Most of them have private insurance, most of them have access to parks and recreation centers and most of them are not poor.
How can public health officials and policymakers use your findings to address the problem?
All this data is available for each state in the U.S. through the national Data Resource Center for Child and Adolescent Health at http://www.childhealthdata.org. My team runs this, and it's supported by the federal Maternal and Child Health Bureau.