Submitted for Publication: May 1, 2014; final revision received July 11, 2014; accepted July 12, 2014.
Published Online: October 2, 2014. doi:10.1001/jamaophthalmol.2014.3459.
Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: All authors.
Administrative, technical, or material support: Marmor.
Study supervision: Melles.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Additional Contributions: Eric Jorgenson, PhD, Division of Research, Kaiser Permanente Northern California, and Frederick Wolfe, MD, National Data Bank for Rheumatic Diseases, gave advice regarding statistical methods.
Correction: This article was corrected on October 30, 2014, to fix an error in Table 2.