data collection (i.e., in-person versus telephone interview),
question placement, context, and other survey methods might
have affected the estimates. Demographic patterns from the
two surveys are consistent, with estimates higher among boys,
older children, non-Hispanic children, children living in
families in which the most highly educated adult was a high
school graduate, children in families with insurance, children
in the Midwest and South, and children living in households
with incomes ≤100% of the federal poverty level.