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. 2021 Dec 17;8(1):e000614. doi: 10.1136/lupus-2021-000614

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Meta-analysis results of the SLE incidence based on four CDC population-based registries, overall and by registry site. Overall incidence estimates for the SLE registry sites in Michigan (MI), Georgia (GA), New York (NY) and California (CA) are represented by circles, with the size of the circle corresponding to the weight of the contribution to the meta-analysis, and the diamond representing the results from the meta-analysis and the lines corresponding to 95% CI. SLE cases were defined according to the 1997 revised American College of Rheumatology criteria. CDC, Centers for Disease Control and Prevention.