Published Online: May 20, 2013. doi:10.1001/jama.2013.5670
Author Contributions: Dr Chlan 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: Chlan, Weinert, Skaar, Savik.
Acquisition of data: Chlan, Guttormson.
Analysis and interpretation of data: Chlan, Weinert, Heiderscheit, Tracy, Skaar, Guttormson, Savik.
Drafting of the manuscript: Chlan, Heiderscheit, Skaar, Savik.
Critical revision of the manuscript for important intellectual content: Chlan, Weinert, Heiderscheit, Tracy, Skaar, Guttormson, Savik.
Statistical analysis: Heiderscheit, Savik.
Obtained funding: Chlan, Weinert, Skaar.
Administrative, technical, or material support: Weinert, Tracy, Skaar, Guttormson.
Study supervision: Chlan, Weinert, Tracy.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest. Dr Chlan reported receiving payment for editorial contributions to Critical Care Alert; receiving royalties from Springer Publishing for editing a textbook; and receiving grants from the National Institutes of Health and Hospira. Dr Weinert reported receiving grants from the National Institutes of Health and Hospira. Dr Heiderscheit reported maintaining a private music therapy practice for which she receives payment; and receiving speakers fees for serving as the keynote speaker at the Mozart and Science conference in 2011. Dr Tracy reported receiving grants from the National Institutes of Health and Hospira; and receiving honoraria as editor of the Advanced Critical Care Journal. Dr Skaar reported receiving grants from Hospira. Ms Savik reported receiving grants from the National Institutes of Health; and serving as a consultant to the Journal of Advanced Nursing. Dr Guttormson did not report any disclosures.
Funding/Support: This study was funded by grant R01-NR009295 from the National Institutes of Health, National Institute of Nursing Research (Dr Chlan was the principal investigator of the grant). A portion of Dr Chlan's salary was paid by the National Institutes of Health to her institution for the work performed. Drs Weinert, Heiderscheit, Tracy, Skaar, and Ms Savik had a portion of their salaries paid by the National Institutes of Health to their institutions for work performed on the grant. Dr Guttormson was a paid project coordinator on this study funded by the National Institutes of Health.
Role of the Sponsor: The National Institutes of Health, National Institute of Nursing Research 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; and decision to submit the manuscript for publication.
Previous Presentation: Presented in part at the 41st Society of Critical Care Medicine's Congress; February 5, 2012; Houston, Texas.