Author Contributions: Dr Yehia 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: Yehia, Gebo.
Acquisition of data: Moore, Gebo.
Analysis and interpretation of data: Yehia, Fleishman, Metlay, Moore, Gebo.
Drafting of the manuscript: Yehia, Fleishman.
Critical revision of the manuscript for important intellectual content: Yehia, Fleishman, Metlay, Moore, Gebo.
Statistical analysis: Yehia, Fleishman.
Obtained funding: Moore, Gebo.
Administrative, technical, or material support: Moore, Gebo.
Study supervision: Metlay, Moore, Gebo.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Moore reported receiving or having grants pending with the National Institutes of Health, Pfizer, and Bristol-Meyers Squibb. Dr Gebo reported having served as a consultant, served on a scientific advisory board, and having received research funding from Tibotec. No other disclosures were reported.
Funding/Support: This study was supported by grant 290-01-0012 from the Agency for Healthcare Research and Quality. Dr Metlay was supported by grant K24 AI073957 from the National Institutes of Health. Dr Moore was supported by grants K24 DA 00432, R01DA11602, and R01 AA 16893 from the National Institutes of Health.
Role of the Sponsors: The funding agencies had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.
Disclaimer: The views expressed in this article are those of the authors. No official endorsement by the Department of Health and Human Services, the National Institutes of Health, or the Agency for Healthcare Research and Quality is intended or should be inferred.
Additional Contributions: A list of the investigators from the HIV Research Network participating sites and data coordinating center are available at https://cds.johnshopkins.edu/hivrn/index.cfm?do=sens.content&page=contacts.html.
This article was corrected for errors on July 24, 2012.