Published Online: March 11, 2013. doi:10.1001/jamainternmed.2013.2803
Author Contributions:Study concept and design: Jackson, Edelman, Olsen, and Maciejewski. Acquisition of data: Jackson, Smith, and Maciejewski. Analysis and interpretation of data: Jackson, Edelman, Olsen, Smith, and Maciejewski. Drafting of the manuscript: Jackson and Maciejewski. Critical revision of the manuscript for important intellectual content: Jackson, Edelman, Olsen, Smith, and Maciejewski. Statistical analysis: Olsen, Smith, and Maciejewski. Obtained funding: Jackson and Maciejewski. Administrative, technical, and material support: Jackson and Maciejewski. Study supervision: Jackson.
Conflict of Interest Disclosures: Dr Maciejewski has received consultation funds from Takeda Pharmaceuticals, Novartis, and the Surgical Review Corporation and owns stock in Amgen.
Funding/Support: This research was funded by the Quality Enhancement Research Initiative (QUERI) of the Department of Veterans Affairs (VA) Health Services Research & Development (HSR&D) Service (RRP-09-407). The Group Visits Trial was funded by VA HSR&D (IIR-03-084). Dr Maciejewski is supported by a VA HSR&D Research Career Scientist Award (RCS-10-391).
Role of the Sponsors: The QUERI and HSR&D of the VA had no role in the design, conduct, collection, management, analysis, or interpretation of the data; or in the preparation, review, or approval of the manuscript.
Trial Registration: clinicaltrials.gov Identifier: NCT00286741
Disclaimer: The views expressed in this article are those of the authors and do not necessarily reflect the position or policy of the VA, the US government, or Duke University.
Previous Presentations: Preliminary results were presented at the VA HSR&D National Meeting; February 17, 2011; National Harbor, Maryland; and at the AcademyHealth Annual Research Meeting; June 12, 2011; Seattle, Washington.
Additional Contributions: Substantial contributions were also provided by Hayden B. Bosworth, PhD; Benjamin J. Powers, MD, MHS; and Miriam A. Kaufman, MSW. The initial Group Visits Trial was led by Dr Edelman (principal investigator), Morris Weinberger, PhD (co-principal investigator), and Sonja K. Fredrickson, MD (site principal investigator). Cynthia J. Coffman, PhD, provided an important review of an earlier draft of the manuscript.