Accepted for Publication: June 16, 2011.
Author Contributions: Dr O’Hare had 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: O’Hare and Choi. Acquisition of data: O’Hare, Choi, Clinton, and Zawadzki. Analysis and interpretation of data: O’Hare, Choi, Boscardin, Kurella Tamura, Taylor, and Larson. Drafting of the manuscript: O’Hare, Choi, Zawadzki, Hebert, and Larson. Critical revision of the manuscript for important intellectual content: O’Hare, Choi, Boscardin, Clinton, Kurella Tamura, Taylor, and Larson. Statistical analysis: O’Hare, Choi, Boscardin, Hebert, and Taylor. Obtained funding: O’Hare. Administrative, technical, and material support: O’Hare, Choi, Clinton, Kurella Tamura, and Larson.
Financial Disclosure: Dr O’Hare serves as the principal investigator for an interagency agreement between the Centers for Disease Control and Prevention and the Veterans Affairs Puget Sound Healthcare System. Within the past year, she has received royalties from UpToDate, Inc. Dr Choi was supported by grant K23DK080645 and Dr Kurella Tamura was supported by grant K23AG028952 (a Paul B. Beeson Career Development Award) from the American Federation for Aging Research and the National Institute on Aging. Dr Larson has received research support from the National Institutes of Health; royalties from UpToDate, Inc; Springer Publishing Company; and Elsevier BV; and speaker honoraria from universities and other nonprofit organizations.
Funding/Support: This study was supported by Beeson Career Development Award K23AG28980 (principal investigator: Dr O’Hare).
Role of the Sponsor: The funding source had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation, review, or approval of the manuscript.
Disclaimer: The study was conducted at the University of Washington and Group Health Research Institute, Seattle, Washington, and does not represent the opinion of the US Renal Data System or the Department of Veterans Affairs.
Additional Information: This manuscript is dedicated to the memory of Andy I. Choi, MD, MS, who made generous and important contributions to this work. Dr Choi died unexpectedly during the final stages of manuscript preparation.
Additional Contributions: We thank Peggy Tobin, BA, of the Group Health Center for Health Studies for providing project coordination for this study and Cristin Weekley, BA, at the Department of Veterans Affairs Medical Center, San Francisco office for preparing Figure 2.