Published Online: April 28, 2014. doi:10.1001/jamainternmed.2014.1179.
Study concept and design: Lagu, Zilberberg, Tjia, Lindenauer.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Lagu, Tjia.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Pekow.
Obtained funding: Lagu.
Administrative, technical, or material support: Lagu, Lindenauer.
Study supervision: Lagu, Pekow.
Conflict of Interest Disclosures: None reported.
Funding/Support: The study was conducted with funding from the Tufts University School of Medicine Charlton Grant Research Program and from the Center for Quality of Care Research at Baystate Medical Center. Dr Lagu is supported by the National Heart, Lung, and Blood Institute of the National Institutes of Health under award K01HL114745. Drs Lindenauer and Pekow are supported by the National Heart, Lung, and Blood Institute under award R18HL108810.
Role of the Sponsor: The sponsors had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Additional Contributions: Meng-Shiou Shieh, PhD, Baystate Medical Center, analyzed the data for this study; Mihaela Stefan, MD, Baystate Medical Center and Tufts University School of Medicine, commented on an earlier draft; and Lauren Williams, BA, Baystate Medical Center, helped with creating the tables. They were not compensated for their contributions to the study.