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Comparisons between comorbid conditions and health care consumption in rheumatoid arthritis patients with or without biological disease-modifying antirheumatic drugs: a register-based study
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2016 (English)In: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 17, no 1, 499Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Symptoms and prognosis of patients with rheumatoid arthritis (RA) have improved with more intensive therapy, including the biological disease-modifying anti-rheumatic drugs (bDMARDs). Real life data concerning how comorbidities are distributed among patients treated or not treated with bDMARDs are scarce. Our objective was to investigate differences in comorbidity and health care consumption in RA patients, with and without bDMARDs.

METHODS: This cross-sectional study was performed in the Southwestern part of Sweden. Patients, aged ≥ 18 years and diagnosed with RA in secondary health care during 2009-2010, were identified in the regional health care database. Aggregated data of comorbidity and health care consumption were retrieved between 2006 and 2010. RA patients treated with bDMARDs on 31st December 2010 were identified in the Swedish Rheumatology Quality Register (SRQ), which includes the biologics register Anti-Rheumatic Therapy in Sweden (ARTIS). Descriptive, comparative, univariate and multiple logistic regression analyses were used to identify factors associated with bDMARDs.

RESULTS: Seven thousand seven hundred and twelve (7712) RA patients were identified (age 64.8 ± 14.9 years, women 74.3%), of whom 1137 (14.7%) were treated with bDMARDs. Overall, the most common comorbidities were infections (69.2%), hypertension (41.1%), chronic respiratory disease (15.3%), ischemic heart disease (14.0%) and malignancy (13.7%). Patients without bDMARDs were older and had more comorbidity. In the multiple logistic regression analysis, older age, cerebrovascular and chronic respiratory disease, heart failure, depression and malignancy were all associated with no present bDMARDs. Infections were associated with bDMARDs. Patients treated with bDMARDs consumed more secondary outpatient care but less visits in primary health care compared to patients without bDMARDs.

CONCLUSIONS: Patients treated with bDMARDs versus no bDMARDs were younger and had significantly lower period prevalence for most common comorbidities, with the exception of infections. Differences in comorbidities between RA patients with or without bDMARDs should be taken into consideration when evaluating effectiveness and safety of bDMARDs in ordinary care.

Place, publisher, year, edition, pages
2016. Vol. 17, no 1, 499
Keyword [en]
Rheumatoid arthritis, Comorbidity, Health care consumption, Biological therapy, bDMARDs, DMARDs, Biologic agents
National Category
Rheumatology and Autoimmunity
Identifiers
URN: urn:nbn:se:umu:diva-131935DOI: 10.1186/s12891-016-1354-7ISI: 000395057200002PubMedID: 27955647OAI: oai:DiVA.org:umu-131935DiVA: diva2:1076930
Available from: 2017-02-24 Created: 2017-02-24 Last updated: 2017-04-02Bibliographically approved

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CiteExportLink to record
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Citation style
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