Author Contributions: Ms Kucirka and Dr Segev had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Kucirka, Grams, Lessler, Hall, Massie, Montgomery, Segev.
Acquisition of data: Kucirka, Grams, Segev.
Analysis and interpretation of data: Kucirka, Grams, Lessler, Hall, James, Massie, Segev.
Drafting of the manuscript: Kucirka, Grams, Lessler, Hall, Massie, Segev.
Critical revision of the manuscript for important intellectual content: Kucirka, Grams, Lessler, Hall, James, Massie, Montgomery, Segev.
Statistical analysis: Kucirka, Grams, Lessler, Hall, James Massie.
Obtained funding: Segev.
Study supervision: Segev.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: Dr Segev reports that this work was supported by grant number R21DK085409 from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) and by a Paul Beeson Career Development Award (cofunded by the National Institute on Aging K23AG032885 and American Federation for Aging Research).
Role of the Sponsor: The sponsor had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.