Submitted for Publication: June 3, 2013; final revision received July 18, 2013; accepted July 29, 2013.
Study concept and design: Schubert, Cruickshanks.
Acquisition of data: Schubert, Cruickshanks, B. E. K. Klein, R. Klein.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Schubert, Fischer.
Critical revision of the manuscript for important intellectual content: Schubert, Cruickshanks, Nondahl, B. E. K. Klein, R. Klein.
Statistical analysis: Schubert, Nondahl, Fischer.
Obtained funding: Cruickshanks, B. E. K. Klein, R. Klein,
Administrative, technical, or material support: Schubert, Cruickshanks.
Study supervision: Schubert, Cruickshanks.
Conflict of Interest Disclosures: None reported.
Funding/Support: The project described was supported by award No. R37AG011099 (Dr Cruickshanks) from the National Institute on Aging, U10EY06594 (Drs B. E. K. Klein and R. Klein) from the National Eye Institute, and an unrestricted grant from Research to Prevent Blindness.
Role of the Sponsor: The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institute on Aging, National Eye Institute, or the National Institutes of Health.
Previous Presentation: Preliminary analyses from this research were presented as a poster at the 34th Annual Meeting of the Association for Chemoreception Sciences; April 26, 2012; Huntington Beach, California.