Submitted for Publication: June 4, 2013; final revision received July 19, 2013; accepted September 27, 2013.
Published Online: November 21, 2013. doi:10.1001/jamaoto.2013.5760.
Study concept and design: Sekhar, Clark, Singer, Paul.
Acquisition of data: Clark, Davis, Singer.
Analysis and interpretation of data: Sekhar, Clark, Paul.
Drafting of the manuscript: Sekhar, Singer.
Critical revision of the manuscript for important intellectual content: Sekhar, Clark, Davis, Paul.
Statistical analysis: Clark.
Obtaining funding: Sekhar.
Administrative, technical, and material support: Clark, Davis, Singer, Paul.
Study supervision: Clark, Paul.
Conflict of Interest Disclosures: None reported.
Funding/Support: This project was supported by a grant from the Children’s Miracle Network.
Role of the Sponsors: The funding agency had no role in design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Additional Contributions: Amy Butchart, MPH, and Achamyeleh Gebremariam, MS, provided statistical support and analysis; both received salary support for their work analyzing data from the NPCH.