Published Online: March 10, 2014. doi:10.1001/jamainternmed.2013.13808.
Study concept and design: All authors.
Acquisition of data: Makam.
Analysis and interpretation of data: All authors.
Drafting of the manuscript: Makam, Auerbach.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Makam.
Administrative, technical, or material support: Makam, Steinman.
Study supervision: Auerbach, Steinman.
Funding/Support: Dr Makam reported working on this project while he was a primary care research fellow at the University of California, San Francisco, funded by a National Research Service Award (training grant T32HP19025-07-00).
Role of the Sponsor: The funding source 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.
Additional Contributions: D. B. Grinsfelder, MPH, Division of Outcomes and Health Services Research, The University of Texas Southwestern Medical Center, Dallas, assisted in creating the Figure. He was not compensated for his services.