Author Contributions: Dr Banthin 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: Banthin, Bernard.
Acquisition of data: Banthin, Bernard.
Analysis and interpretation of data: Banthin, Bernard.
Drafting of the manuscript: Banthin.
Critical revision of the manuscript for important intellectual content: Banthin, Bernard.
Statistical analysis: Banthin, Bernard.
Administrative, technical, or material support: Banthin, Bernard.
Study supervision: Banthin.
Financial Disclosures: None reported.
Funding/Support: This study was supported by the AHRQ, as employer of Drs Banthin and Bernard.
Role of the Sponsor: The AHRQ reviewed the manuscript prior to submission for conformity to administrative procedures and proper use of the data. The AHRQ had no role in the design and conduct of the study or in the collection, analysis, and interpretation of the data.
Disclaimer: The views expressed in this article are those of the authors, and no official endorsement by the Department of Health and Human Services or the AHRQ is intended or should be inferred.