Document Detail

Prevalence of low hemoglobin levels and associations with other disease parameters in rheumatoid arthritis patients: evidence from the CORRONA registry.
MedLine Citation:
PMID:  19772785     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To estimate the prevalence of low hemoglobin (Hb) levels in a large US cohort of patients with rheumatoid arthritis (RA) and examine the relationship between Hb levels and RA severity, associated comorbidities, and quality-of-life parameters by cross-sectional analysis of data from the Consortium of Rheumatology Researchers of North America (CORRONA) registry. METHODS: The study population comprised patients with RA >18 years of age and clinical information recorded in the CORRONA registry between October 1, 2001 and February 1, 2007. Patients were separated into low (Hb <13 g/dl for men; <12 g/dl for women) and normal Hb groups (Hb >13 g/dl for men; >12 g/dl for women). Hb levels were calculated from recorded hematocrit values. RESULTS: Of the 10,397 study patients, 1734 (16.7%) had low Hb levels and 8663 (83.3%) had normal Hb levels. More patients in the low Hb group had a history of comorbid cardiovascular disease, diabetes, and gastrointestinal disease. The low Hb group exhibited greater disease severity and activity (p<0.05) as reported by patients and rheumatologists. In multivariate analyses, RA severity ([odds ratio] OR 1.24; 95% confidence interval [CI]: 1.07-1.44) and ESR (OR 1.04; 95% CI: 1.03-1.05), and comorbid bleeding ulcers (OR 2.04; 95% CI: 1.01-4.12) were predictive of low Hb levels. CONCLUSION: Despite changes in treatment paradigms, low Hb levels remain prevalent in RA patients. This analysis suggests that low Hb levels may be associated with RA disease severity and the presence of certain comorbidities.
D E Furst; H Chang; J D Greenberg; V K Ranganath; G Reed; Z E Ozturk; J M Kremer
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Publication Detail:
Type:  Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical and experimental rheumatology     Volume:  27     ISSN:  0392-856X     ISO Abbreviation:  Clin. Exp. Rheumatol.     Publication Date:    2009 Jul-Aug
Date Detail:
Created Date:  2009-09-23     Completed Date:  2009-11-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8308521     Medline TA:  Clin Exp Rheumatol     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  560-6     Citation Subset:  IM    
University of California Los Angeles, Los Angeles, California, USA.
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MeSH Terms
Anemia / blood,  epidemiology*,  physiopathology
Arthritis, Rheumatoid / blood,  epidemiology*,  physiopathology
Cohort Studies
Health Status
Hemoglobins / analysis*
Middle Aged
Prospective Studies
Quality of Life
Severity of Illness Index
United States / epidemiology
Reg. No./Substance:

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