Author Contributions: Dr Leigh 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: Leigh, Tancredi, and Kravitz. Acquisition of data: Leigh, Tancredi, and Kravitz. Analysis and interpretation of data: Leigh, Tancredi, and Jerant. Drafting of the manuscript: Leigh. Critical revision of the manuscript for important intellectual content: Leigh, Tancredi, Jerant, and Kravitz. Statistical analysis: Leigh and Tancredi. Obtained funding: Leigh. Administrative, technical, and material support: Leigh, Jerant, and Kravitz. Study supervision: Leigh.
Financial Disclosure: None reported.
Funding/Support: This study was funded in part by grants to Dr Leigh from the National Institute for Occupational Safety and Health (grant 1 R01 H008248-01) and Drs Tancredi and Kravitz from the UC Davis Office of the Vice Chancellor for Research.
Role of the Sponsors: The funding sources had no involvement in the design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation, review, or approval of the manuscript.