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Published in: Arthritis Research & Therapy 1/2019

Open Access 01-12-2019 | Systemic Lupus Erythematosus | Research article

Comparing the burdens of opportunistic infections among patients with systemic rheumatic diseases: a nationally representative cohort study

Authors: Chung-Yuan Hsu, Chi-Hua Ko, Jiun-Ling Wang, Tsai-Ching Hsu, Chun-Yu Lin

Published in: Arthritis Research & Therapy | Issue 1/2019

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Abstract

Objective

To estimate and compare the burdens of opportunistic infections and herpes zoster in real-world practice among patients with various systemic rheumatic diseases.

Methods

This 13-year cohort study used national health insurance data to compare the incidence rates (IRs) of nine opportunistic infections among patients with five rheumatic diseases. The analyses were stratified according to follow-up duration using Poisson regression, and Cox models were used to compare the risk of first opportunistic infection.

Results

During 2000–2013, we identified 76,966 patients who had polymyositis/dermatomyositis (PM/DM, 2270 cases), systemic lupus erythematosus (SLE, 15,961 cases), systemic sclerosis (SSc, 2071 cases), rheumatoid arthritis (RA, 38,355 cases), or primary Sjögren’s syndrome (pSS, 18,309 cases). The IR of opportunistic infections was highest for PM/DM cases (61.3/1000 person-years, 95% confidence interval [CI] 56.6–66.2), followed by SLE cases (43.1/1000 person-years, 95% CI 41.7–44.5), SSc cases (31.6/1000 person-years, 95% CI 28.3–35.1), RA cases (25.0/1000 person-years, 95% CI 24.4–25.7), and pSS cases (24.1/1000 person-years, 95% CI 23.1–25.2). Multivariable Cox analysis revealed that, relative to SLE, PM/DM was associated with a significantly higher risk of opportunistic infections (hazard ratio 1.18, 95% CI 1.08–1.29). The risk of opportunistic infections was highest during the first year after the diagnosis of all five rheumatic diseases.

Conclusions

The risk of opportunistic infection was highest for PM/DM, followed by SLE, SSc, RA, and pSS. Careful observation and preventive therapy for opportunistic infections may be warranted in selected PM/DM patients, especially during the first year after the diagnosis.
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Metadata
Title
Comparing the burdens of opportunistic infections among patients with systemic rheumatic diseases: a nationally representative cohort study
Authors
Chung-Yuan Hsu
Chi-Hua Ko
Jiun-Ling Wang
Tsai-Ching Hsu
Chun-Yu Lin
Publication date
01-12-2019
Publisher
BioMed Central
Published in
Arthritis Research & Therapy / Issue 1/2019
Electronic ISSN: 1478-6362
DOI
https://doi.org/10.1186/s13075-019-1997-5

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