Accepted for Publication: November 28, 2013.
Published Online: March 17, 2014. doi:10.1001/jamainternmed.2014.245.
Study concept and design: Hussey, Schneider, Rudin, Fox, Pollack.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Hussey, Schneider, Lai, Pollack.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Hussey, Schneider, Rudin, Fox, Lai.
Obtained funding: Hussey, Schneider.
Administrative, technical, or material support: Rudin.
Study supervision: Hussey, Schneider.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by the Aetna Foundation, the National Cancer Institute (Dr Pollack), and grant K07 CA151910 from the Office of Behavioral and Social Sciences (K07 CA151910).
Role of the Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, or interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: This study was presented at the Society for General Internal Medicine Annual Meeting; April 25, 2013; Denver, Colorado.
Additional Contributions: Claude Setodji, PhD, RAND Corporation, provided statistical advice.