Author Contributions: Dr Krumholz 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: Magid, Wang, Herrin,
McNamara, Pollack, Krumholz.
Analysis and interpretation of data: Wang,
Herrin, Magid, McNamara, Bradley, Curtis, Pollack, French, Blaney, Krumholz.
Drafting of the manuscript: Magid, Herrin.
Critical revision of the manuscript for important
intellectual content: Magid, Wang, McNamara, Bradley, Curtis, Pollack,
French, Blaney, Krumholz.
Statistical analysis: Wang, Herrin
Obtained funding: Krumholz.
Administrative, technical, or material support:
Study supervision: Krumholz.
Financial Disclosures: None reported.
Funding/Support: This research was supported
by grant R01 HL072575 of the National Heart, Lung, and Blood Institute.
Role of the Sponsor: The National Heart, Lung,
and Blood Institute had no involvement in the design or conduct of the study,
data management or analysis, or manuscript preparation, review, or authorization
for submission. Genentech approved the study and provided access to the NRMI
database at no charge; however, Genentech did not provide any direct support
for the study and was not involved in the study design and conduct, analysis
and interpretation of the data, and preparation of the manuscript.