Published Online: June 22, 2015. doi:10.1001/jamapediatrics.2015.0681.
Study concept and design: Badgett, Stirnaman.
Acquisition, analysis, or interpretation of data: Badgett, Vindhyal, Gibson, Halaby.
Drafting of the manuscript: Badgett, Vindhyal, Stirnaman.
Critical revision of the manuscript for important intellectual content: Badgett, Stirnaman, Gibson, Halaby.
Statistical analysis: Badgett, Vindhyal, Gibson.
Administrative, technical, or material support: Badgett, Vindhyal, Stirnaman.
Study supervision: Badgett.
Conflict of Interest Disclosures: None reported.
Additional Contributions: We acknowledge the patient assistance provided directly and indirectly by Jeroen Ooms, PhD, Department of Statistics, University of California Los Angeles, creator of https://www.opencpu.org/, and Guido Schwarzer, PhD, Institute for Medical Biometry and Statistics, Medical Center; University of Freiburg, Germany, author of http://cran.r-project.org/web/packages/meta/. Neither individual received financial compensation.