Published Online: June 30, 2014. doi:10.1001/jamainternmed.2014.2726.
Study concept and design: Toblin, Hoge.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Toblin, Quartana.
Administrative, technical, or material support: Riviere, Walper.
Study supervision: Hoge.
Conflict of Interest Disclosures: None reported.
Funding/Support: The US Army Medical Research and Materiel Command (USAMRMC) provides intramural funding that supports enhancing the psychological resilience of the warfighter.
Role of the Sponsor: The USAMRMC had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Disclaimer: The views reported herein are those of the authors only and do not represent the views of the US Army, Department of Defense, or any of the institutes listed.
Previous Presentation: Some data from this study were presented at the American Public Health Association Annual Meeting; October 29, 2012; San Francisco, California.
Additional Information: Dr Riviere was the principal investigator of the study.
Additional Contributions: We are grateful to the soldiers and leadership of the participating unit and the Land Combat Study team for assistance with data collection.