Accepted for Publication: February 27, 2015.
Correction: This article was corrected on June 11, 2015, for errors in the Author Affiliations and Corresponding Author address and on March 23, 2016, for an error in the abstract.
Published Online: June 3, 2015. doi:10.1001/jamasurg.2015.0876.
Study concept and design: Sagara, Mallory, Aydogan, Golshan.
Acquisition, analysis, or interpretation of data: Sagara, Mallory, Wong, DeSantis, Barry, Golshan.
Drafting of the manuscript: Sagara, Barry, Golshan.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Sagara, Barry.
Administrative, technical, or material support: Sagara, Mallory, Aydogan, Golshan.
Study supervision: Barry, Golshan.
Conflict of Interest Disclosures: None reported.
Previous Presentation: This paper was presented at the 2015 Annual Meeting of the American Society of Clinical Oncology; June 1, 2015; Chicago, Illinois.
Additional Contributions: We acknowledge the instructors at the Harvard School of Public Health Clinical Effectiveness program. The protocol of this study was proposed and refined with their support during the summer program. We also acknowledge Hajime Uno, PhD, Division of Population Sciences and Biostatistics and Computational Biology, Dana-Farber Cancer Institute, for giving us insightful advice on statistical methods. He did not receive financial compensation.