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. Author manuscript; available in PMC: 2009 Jan 23.
Published in final edited form as: N Engl J Med. 2007 Sep 6;357(10):977–986. doi: 10.1056/NEJMoa073003

Table 1.

Case-Control Series for Rheumatoid Arthritis and Systemic Lupus Erythematosus.*

Series No. of Case Patients No. of Controls
Rheumatoid arthritis
NARAC 607 1309
Replication series 1013 1326
EIRA 1529 881
Lupus
UCSF 575 416
ABCoN 349 416
MADGC 115 416
*

NARAC denotes the North American Rheumatoid Arthritis Consortium, EIRA the Epidemiological Investigation of Rheumatoid Arthritis, UCSF the University of California at San Francisco, ABCoN the Autoimmune Biomarkers Collabora-tive Network, and MADGC the Multiple Autoimmune Diseases Genetics Consortium.

The three sets of controls for the three lupus case-control series are 1248 in-dependent samples that were randomly assigned to the three series.