Submitted for Publication: December 10, 2013; final revision received March 30, 2014; accepted April 7, 2014.
Published Online: May 29, 2014. doi:10.1001/jamaoto.2014.812.
Study concept and design: VanderWalde, Salloum, Liu, Hornbrook, Ritzwoller, Chera.
Acquisition, analysis, or interpretation of data: VanderWalde, Salloum, Liu, Hornbrook, O’Keeffe Rosetti, Ritzwoller, Fishman, Elston Lafata, Khandani, Chera.
Drafting of the manuscript: VanderWalde, Salloum, Hornbrook, Ritzwoller, Chera.
Critical revision of the manuscript for important intellectual content: VanderWalde, Salloum, Liu, O’Keeffe Rosetti, Fishman, Elston Lafata, Khandani, Chera.
Statistical analysis: VanderWalde, Salloum, Liu, Hornbrook, Ritzwoller, Fishman.
Obtained funding: Fishman.
Administrative, technical, or material support: Hornbrook, O’Keeffe Rosetti, Fishman, Elston Lafata, Khandani.
Study supervision: VanderWalde, Salloum, Fishman, Elston Lafata, Chera.
Conflict of Interest Disclosures: None reported.
Funding/Support: This research was funded in part by National Cancer Institute (NCI) grants R01 CA114204 (Hornbrook), RC2 CA148185 (Ritzwoller), and R25 CA116339 (Salloum) and by NCI Cooperative Agreement U19 CA79689.
Role of the Sponsor: The NCI had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: This study was presented as a poster discussion presentation at the annual American Society of Clinical Oncology meeting; June 1, 2013; Chicago, Illinois.
Additional Contributions: The following staff members provided some data processing and analysis support for this study: Jenny Staab, PhD, Erin M. Keast, MPH, Erin E. Masterson, MPH, Donald J. Bachman, MS, and Arthur Dixon, MSTM, Kaiser Permanente Northwest, Portland, Oregon; Group Health: Cristi Hanson, BA, Group Health Cooperative, Seattle, Washington; Stephanie Latimer, BS, and Gwyn Saylor, BA, Kaiser Permanente Colorado, Denver; Nonna Akkerman, BS, and Liz Dobie, MPH, Health Alliance Plan–Henry Ford Health System, Detroit, Michigan. No acknowledged person received compensation for their work on this research beyond that provided in the normal course of their employment.