Accepted for Publication: June 25, 2014.
Published Online: August 18, 2014. doi:10.1001/jamainternmed.2014.3918.
Study concept and design: Mitchell, Shaffer, D’Agata.
Acquisition, analysis, or interpretation of data: Mitchell, Shaffer, Loeb, Givens, Habtemariam, Kiely.
Drafting of the manuscript: Mitchell, Shaffer, D’Agata.
Critical revision of the manuscript for important intellectual content: Mitchell, Shaffer, Loeb, Givens, Habtemariam, Kiely, D’Agata.
Statistical analysis: Mitchell, Shaffer, Givens, Habtemariam, Kiely, D’Agata.
Obtained funding: Mitchell, D’Agata.
Administrative, technical, or material support: Mitchell, Loeb, Habtemariam, D’Agata.
Study supervision: Mitchell, Habtemariam, D’Agata.
Conflict of Interest Disclosures: None reported.
Funding/Support: This research was supported by National Institutes of Health National Institutes on Aging (NIH-NIA) grant R01 AG032982. Dr Mitchell is supported by NIH-NIA grant K24AG033640. Dr Givens is supported by NIH-NIA K23 AG034967.
Role of the Sponsor: The funding sources for this study played no role in the design or conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.
Additional Contributions: The investigators wish to thank the SPREAD data collection and management team (Ruth Carroll, RN, Sara Hooley, BSc, Mailika Lindsay, LPN, Holly Giampetro, LPN, Laurie Terp, RN, Lata Venkataraman, MSc, Ellen Gornstein, Shirley Morris, Diane Enghorn, Margaret Bryan, and Christopher Rockett, PhD), all the staff members at the participant nursing homes, and the residents and their families who have generously given their time to this study.