Author Contributions: Dr Ehlenbach 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: Ehlenbach, Hough, Carson, Curtis, Larson.
Acquisition of data: Larson.
Analysis and interpretation of data: Ehlenbach, Hough, Crane, Haneuse, Curtis, Larson.
Drafting of the manuscript: Ehlenbach, Larson.
Critical revision of the manuscript for important intellectual content: Ehlenbach, Hough, Crane, Haneuse, Carson, Curtis, Larson.
Statistical analysis: Ehlenbach, Hough, Haneuse, Curtis.
Obtained funding: Hough, Crane, Larson.
Administrative, technical, or material support: Crane, Larson.
Study supervision: Curtis, Larson.
Financial Disclosures: None reported.
Funding/Support: The Adult Changes in Thought study is funded by a National Institutes of Health (NIH) National Institute on Aging Cooperative Grant (UO1 AG06781; principal investigator [PI]: Dr Larson). Additional funding for this study was provided by the John A. Hartford Foundation (PI: Dr Hough), a K24 Award from the National Heart, Lung, and Blood Institute (1 K24 HL068593; PI: Dr Curtis), and an R01 from the National Institute on Aging (R01 AG029672; PI: Dr Crane). Dr Ehlenbach was supported by an NIH Respiratory Research Training Grant (5T32HL007287-30; PI: Leonard Hudson, MD, University of Washington) and a Department of Veterans Affairs Health Services Research and Development Postdoctoral Fellowship.
Role of the Sponsor: The funding agencies had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Additional Contributions: Our colleague Steven L. Balch, MA, MBA, of the Group Health Research Institute, assisted with data cleaning, management, and analysis data set creation. He did not receive compensation for these contributions.