Author Contributions: Dr Hochman 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: M. Hochman, McCormick.
Acquisition of data: M. Hochman, S. Hochman.
Analysis and interpretation of data: M. Hochman, S. Hochman, Bor, McCormick.
Drafting of the manuscript: M. Hochman.
Critical revision of the manuscript for important intellectual content: M. Hochman, S. Hochman, Bor, McCormick.
Statistical analysis: M. Hochman, McCormick.
Obtained funding: M. Hochman,
Administrative, technical, or material support: M. Hochman, S. Hochman, Bor, McCormick.
Study supervision: McCormick.
Financial Disclosures: None reported.
Funding/Support: The study was paid for by the Department of Medicine at Cambridge Hospital.
Role of the Sponsor: Cambridge Hospital, Department of Medicine, had no role in the study design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approvals of the manuscript.
Previous Presentations: Some of the results of this study were previously reported at the Society of General Internal Medicine's New England Regional Meeting in Worcester, Massachusetts, on March 14, 2008.
Additional Contributions: We thank David Himmelstein, MD, Steffie Woolhandler, MD, MPH, Karen Lasser, MD, MPH, and Andrew Wilper, MD, MPH, all from the Department of Medicine at Cambridge Hospital, for their thoughtful critiques and suggestions, for which they received no compensation.