Author Contributions: Dr Thabut 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: Thabut, Christie, Kremers, Halpern.
Acquisition of data: Thabut, Christie.
Analysis and interpretation of data: Thabut, Christie, Kremers, Fournier, Halpern.
Drafting of the manuscript: Thabut, Christie, Halpern.
Critical revision of the manuscript for important intellectual content: Thabut, Christie, Kremers, Fournier, Halpern.
Statistical analysis: Thabut, Christie, Kremers.
Obtained funding: Thabut, Fournier.
Administrative, technical, or material support: Thabut.
Study supervision: Thabut, Christie, Halpern.
Financial Disclosures: None reported.
Funding/Support: Dr Thabut received support for his work from Assistance Publique–Hopitaux de Paris and Collège des Enseignants de Pneumologie (CEP) and AstraZeneca during his fellowship. Dr Halpern was supported by grant 1K08 HS018406-01 from the Agency for Healthcare Research and Quality.
Role of the Sponsors: The funding agencies had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Disclaimer: The data reported here have been supplied by the United Network for Organ Sharing (UNOS) as the contractor for the Organ Procurement and Transplantation Network (OPTN). The interpretation and reporting of these data are the responsibility of the authors and in no way should be seen as an official policy of or interpretation by the OPTN or the US government.
Additional Information: Study protocol and statistical code are available from Dr Thabut. The data set is available on request from UNOS (http://www.unos.org).