Study concept and design: Chiong, Kim, Farahany, Josephson.
Acquisition, analysis, or interpretation of data: Chiong, Kim, Huang.
Drafting of the manuscript: Chiong, Huang.
Critical revision of the manuscript for important intellectual content: Chiong, Kim, Farahany, Josephson.
Statistical analysis: Chiong, Kim.
Obtained funding: Chiong.
Study supervision: Josephson.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Kim reported receiving grants from SanBio Inc outside the submitted work. No other disclosures were reported.
Funding/Support: This work was supported by grant K23AG043553 from the National Institute on Aging, grant KL2TR000143 from the National Center for Advancing Translational Sciences, and by funding through the American Brain Foundation Clinical Research Training Fellowship Program. Data collection was provided by Time-sharing Experiments in the Social Sciences with National Science Foundation grant 0818839 (Jeremy Freese, PhD, and James Druckman, PhD, principal investigators). Time-sharing Experiments in the Social Sciences provided data collection using the GfK KnowledgePanel and survey weights for matching participants’ responses to the US Current Population Survey.
Role of the Sponsors: The sponsors had no role in the design of the study; analysis and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: We gratefully acknowledge the technical contributions of Carolyn Chu, Stefan Subias, and other staff of GfK; and the assistance of Amy J. Markowitz, JD, and John M. Neuhaus, PhD (both with the University of California, San Francisco), in drafting the manuscript. None received compensation for their contributions.