Author Contributions: Drs Rothberg and Pekow had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Rothberg, Pekow, Brody, Skiest, Lindenauer.
Acquisition of data: Lindenauer.
Analysis and interpretation of data: Rothberg, Pekow, Lahti, Skiest, Lindenauer.
Drafting of the manuscript: Rothberg, Pekow, Lahti, Brody.
Critical revision of the manuscript for important intellectual content: Pekow, Skiest, Lindenauer.
Statistical analysis: Pekow, Lahti.
Administrative, technical, or material support: Skiest, Lindenauer.
Study supervision: Pekow, Lindenauer.
Financial Disclosures: None reported.
Additional Contributions: We thank Chris Craver, MA, an employee of Premier Healthcare Informatics, for his assistance with the study.
This article was corrected online for error in data on 5/25/2010, prior to publication of the correction in print.
This article was corrected online for typographical errors on 6/8/2010.