Design and Operation of the National Survey of Children's Health, 2003.

A total of 91,642 interviews were completed from April 2007 to July 2008. Nearly 80% of the interviews were completed in 2007. Interviews were completed in 66.0% of identified households with children. The weighted overall response rate was 46.7%. A data file has been released that contains demographic information on the selected child, substantive health and well-being data for the child and his or her family, and sampling weights. Estimates based on the sampling weights generalize to the noninstitutionalized population of children in each state and nationwide.