Author Contributions: Dr Seabury had full access to all of 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: Seabury, Jena, Chandra.
Acquisition of data: Seabury, Chandra.
Analysis and interpretation of data: Seabury, Jena, Chandra.
Drafting of the manuscript: Seabury, Jena, Chandra.
Critical revision of the manuscript for important intellectual content: Seabury, Jena.
Statistical analysis: Seabury, Jena, Chandra.
Obtained funding: Chandra.
Administrative, technical, or material support: Chandra.
Study supervision: Seabury.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: Dr Chandra was supported by grant P01 AG19783-02 from the National Institute on Aging.
Role of the Sponsors: The National Institute on Aging 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.