1Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, China;
Anhui Provincial Laboratory of Population Health & Major Disease Screening and Diagnosis, Anhui Medical University, Hefei, China;
Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, China;
Department of Rheumatology, Anhui Provincial Hospital, Hefei, China;
Division of Rheumatology, The First Ancillary Hospital, Anhui Medical University, Hefei, China;
Statistical; Methods; Public; Health; Epidemiology; Systemic; Lupus; Erythematosus;