Submitted for Publication: August 23, 2013; final revision received November 26, 2013; accepted December 19, 2013.
Published Online: March 27, 2014. doi:10.1001/jamaophthalmol.2013.8201.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Reddy, Baker, Allen.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Reddy, Sobel, Whelan, Allen.
Obtained funding: Reddy, Carter.
Study supervision: Baker, Allen.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by funding from the University of Iowa Medical Student Research Fellowship.
Role of the Sponsor: The University of Iowa 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: We acknowledge and thank Suzanne Mitts, coding specialist, Department of Ophthalmology and Visual Sciences, University of Iowa Hospitals and Clinics, for her role in the data collection process, which included collecting and extrapolating hospital billing information. She did not receive compensation for this work.