Accepted for Publication: July 1, 2011.
Author Contributions: Dr Richard Roetzheim has full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Ferrante, McCarthy, Gonzalez, Lee, Love-Jackson, and Roetzheim. Acquisition of data: Lee and Roetzheim. Analysis and interpretation of data: Ferrante, McCarthy, Lee, Chen, and Roetzheim. Drafting of the manuscript: Ferrante and Roetzheim. Critical revision of the manuscript for important intellectual content: Ferrante, Gonzalez, Lee, Chen, and Roetzheim. Statistical analysis: McCarthy, Lee, and Chen. Obtained funding: Roetzheim. Administrative, technical, and material support: Ferrante, McCarthy, Chen, Love-Jackson, and Roetzheim. Study supervision: Roetzheim.
Financial Disclosure: None reported.
Funding/Support: This study was supported by grant RSGHP-08-141-01-CPHPS from the American Cancer Society. The collection of the California cancer incidence data used in this study was supported by the California Department of Public Health as part of the statewide cancer-reporting program mandated by California Health and Safety Code Section 103885; the National Cancer Institute's SEER Program under contract N01-PC-35136 awarded to the Northern California Cancer Center, contract N01-PC-35139 awarded to the University of Southern California, and contract N02-PC-15105 awarded to the Public Health Institute; and the Centers for Disease Control and Prevention's National Program of Cancer Registries, under agreement U55/CCR921930-02 awarded to the Public Health Institute.
Role of the Sponsor: The funding body had no role in the design and conduct of the study; in the collection, management, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Disclaimer: The interpretation and reporting of the SEER-Medicare data are the sole responsibility of the authors. The ideas and opinions expressed herein are those of the authors; endorsement by the State of California Department of Public Health, the National Cancer Institute, and the Centers for Disease Control and Prevention or their contractors and subcontractors is not intended and should not be inferred.
Previous Presentations: A portion of this study was presented as a poster at Academy Health's 2011 Annual Research Meeting; June 13, 2011; Seattle, Washington, and will also be presented at the 39th Annual Meeting of the North American Primary Care Research Group; November 15, 2011; Banff, Alberta, Canada.
Additional Contributions: The authors acknowledge the efforts of the Applied Research Program, NCI; the Office of Research, Development and Information, CMS; Information Management Services, Inc; and the SEER Program tumor registries in the creation of the SEER-Medicare database.