Accepted for Publication: January 2, 2012.
Published Online: March 5, 2012. doi:10.1001/archpediatrics.2012.5
Author Contributions:Study concept and design: Sonneville, Kocher, Pierce, and Field. Acquisition of data: Field. Analysis and interpretation of data: Sonneville, Gordon, Kocher, Ramappa, and Field. Drafting of the manuscript: Sonneville and Kocher. Critical revision of the manuscript for important intellectual content: Sonneville, Gordon, Pierce, Ramappa, and Field. Statistical analysis: Sonneville and Field. Obtained funding: Field. Administrative, technical, and material support: Pierce. Study supervision: Kocher and Field.
Financial Disclosure: Dr Gordon receives partial salary support from Pfizer/Merck for her role as the codirector of a clinical investigator training program funded by Harvard Medical School and Pfizer/Merck. Dr Kocher consults for Smith and Nephew Endoscopy, Biomet, OrthoPediatrics, Pivot Medical, and ConMed Linvatec.
Funding/Support: This work was supported by the Department of Orthopedics, Children's Hospital Boston and by research grant DK-59570 from the National Institutes of Health.
Additional Contributions: We thank the thousands of young people across the country participating in the Growing Up Today Study and their mothers.