Author Contributions: Dr Yan 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: Yan, Daviglus, Liu, Stamler, Liao, Fries, Greenland.
Acquisition of data: Daviglus, Stamler, Garside, Greenland.
Analysis and interpretation of data: Yan, Daviglus, Liu, Stamler, Wang, Pirzada, Dyer, Van Horn, Fries, Greenland.
Drafting of the manuscript: Yan, Daviglus, Stamler, Wang, Liao.
Critical revision of the manuscript for important intellectual content: Yan, Daviglus, Liu, Stamler, Pirzada, Garside, Dyer, Van Horn, Liao, Fries, Greenland.
Statistical analysis: Yan, Liu, Wang, Dyer, Liao.
Obtained funding: Daviglus, Stamler, Dyer, Greenland.
Administrative, technical, or material support: Yan, Stamler, Garside, Van Horn, Fries, Greenland.
Study supervision: Yan, Daviglus, Stamler, Greenland.
Financial Disclosures: None reported.
Funding/Support: Funding for this study was provided by National Heart, Lung, and Blood Institute grants R21-HL75259, R01-HL21010, and R01-HL62684.
Role of the Sponsor: The National Heart, Lung, and Blood Institute did not participate 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.
Acknowledgment: We thank the officers and employees of the Chicago companies and organizations whose invaluable cooperation and assistance made this study possible; the staff members and volunteers involved in the Chicago Heart Association Detection Project in Industry; and our colleagues who contributed to this important endeavor. Many of these individuals are cited by name in reference 7.