†Died March 1, 2015.
Submitted for Publication: November 12, 2014; final revision received January 20, 2015; accepted January 22, 2015.
Published Online: April 15, 2015. doi:10.1001/jamapsychiatry.2015.0082.
Study concept and design: Katon, Pedersen, Ribe, Fenger-Grøn, Vestergaard.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Katon, Ribe, Davydow.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Pedersen, Fenger-Grøn.
Obtained funding: Vestergaard.
Administrative, technical, or material support: Katon, Pedersen, Fenger-Grøn, Vestergaard.
Study supervision: Katon, Ribe, Davydow, Vestergaard.
Conflict of Interest Disclosures: None reported.
Funding/Support: The study was supported by an unrestricted grant from the Lundbeck Foundation and by grant KL2 TR000421 from the National Institutes of Health (Dr Davydow).
Role of the Funder/Sponsor: The funding sources 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.