Document Detail

Epidemiology and sociodemographics of systemic lupus erythematosus and lupus nephritis among US adults with Medicaid coverage, 2000-2004.
MedLine Citation:
PMID:  23203603     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Systemic lupus erythematosus (SLE) and lupus nephritis (LN) disproportionately affect individuals who are members of racial/ethnic minority groups and individuals of lower socioeconomic status (SES). This study was undertaken to investigate the epidemiology and sociodemographics of SLE and LN in the low-income US Medicaid population.
METHODS: We utilized Medicaid Analytic eXtract data, with billing claims from 47 states and Washington, DC, for 23.9 million individuals ages 18-65 years who were enrolled in Medicaid for >3 months in 2000-2004. Individuals with SLE (≥3 visits >30 days apart with an International Classification of Diseases, Ninth Revision [ICD-9] code of 710.0) and with LN (≥2 visits with an ICD-9 code for glomerulonephritis, proteinuria, or renal failure) were identified. We calculated SLE and LN prevalence and incidence, stratified by sociodemographic category, and adjusted for number of American College of Rheumatology (ACR) member rheumatologists in the state and SES using a validated composite of US Census variables.
RESULTS: We identified 34,339 individuals with SLE (prevalence 143.7 per 100,000) and 7,388 (21.5%) with LN (prevalence 30.9 per 100,000). SLE prevalence was 6 times higher among women, nearly double in African American compared to white women, and highest in the US South. LN prevalence was higher among all racial/ethnic minority groups compared to whites. The areas with lowest SES had the highest prevalence; areas with the fewest ACR rheumatologists had the lowest prevalence. SLE incidence was 23.2 per 100,000 person-years and LN incidence was 6.9 per 100,000 person-years, with similar sociodemographic trends.
CONCLUSION: In this nationwide Medicaid population, there was sociodemographic variation in SLE and LN prevalence and incidence. Understanding the increased burden of SLE and its complications in this low-income population has implications for resource allocation and access to subspecialty care.
Candace H Feldman; Linda T Hiraki; Jun Liu; Michael A Fischer; Daniel H Solomon; Graciela S Alarcón; Wolfgang C Winkelmayer; Karen H Costenbader
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Arthritis and rheumatism     Volume:  65     ISSN:  1529-0131     ISO Abbreviation:  Arthritis Rheum.     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-02-26     Completed Date:  2013-04-24     Revised Date:  2014-05-01    
Medline Journal Info:
Nlm Unique ID:  0370605     Medline TA:  Arthritis Rheum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  753-63     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2013 by the American College of Rheumatology.
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MeSH Terms
African Americans / statistics & numerical data
Age Distribution
European Continental Ancestry Group / statistics & numerical data
Hispanic Americans / statistics & numerical data
Indians, North American / statistics & numerical data
Lupus Erythematosus, Systemic / ethnology*
Lupus Nephritis / ethnology*
Medicaid / statistics & numerical data*
Middle Aged
Minority Groups / statistics & numerical data*
Sex Distribution
United States / epidemiology
Young Adult
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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