Author Contributions: Dr Lasser, the primary author, had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Lasser, Kronman, and Samet. Acquisition of data: Lasser. Analysis and interpretation of data: Lasser, Kronman, Cabral, and Samet. Drafting of the manuscript: Lasser, Cabral, and Samet. Critical revision of the manuscript for important intellectual content: Lasser, Kronman, Cabral, and Samet. Statistical analysis: Lasser, Kronman, and Cabral. Obtained funding: Lasser and Samet. Administrative, technical, and material support: Lasser. Study supervision: Lasser and Samet.
Financial Disclosure: Dr Lasser was a consultant to Rise Health (June-November 2011).
Funding/Support: This study was supported by the Department of Medicine at Boston Medical Center/Boston University School of Medicine.
Previous Presentation: This work was presented at the Society of General Internal Medicine Annual Meeting; May 7, 2011; Phoenix, Arizona.
Additional Contributions: Meredith Manze D’Amore, PhD (Section of General Internal Medicine, Boston Medical Center/Boston University School of Medicine), assisted in manuscript preparation; Linda C. Rosen, BSEE (Boston University Office of Clinical Research), performed data extraction; and Maxim D Shrayer, PhD (Department of Slavic and Eastern Languages and Literatures, Boston College), and William Fernandez, MD (Department of Emergency Medicine, Boston Medical Center/Boston University School of Medicine), provided comments on an earlier draft of the manuscript.