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https://hdl.handle.net/10316/27651
Título: | How to calculate the ASDAS if the conventional CRP is below the limit of detection or if using high sensitivity CRP? – An analysis in the DESIR cohort | Autor: | Machado, Pedro Navarro-Compán, Victoria Landewé, Robert Gaalen, Floris A. van Roux, Christian Heijde, Désirée van der |
Data: | 2014 | Editora: | American College of Rheumatology | Citação: | MACHADO, Pedro [et. al] - How to calculate the ASDAS if the conventional CRP is below the limit of detection or if using high sensitivity CRP? – An analysis in the DESIR cohort. "Arthritis & Rheumatology". ISSN 2326-5205. (2014) | Título da revista, periódico, livro ou evento: | Arthritis & Rheumatology | Resumo: | Background: The Ankylosing Spondylitis Disease Activity Score (ASDAS) is a composite measure of disease activity in axial spondyloarthritis. Objectives: Our aims were to investigate the most appropriate ASDAS-C-reactive protein (ASDAS-CRP) calculation method when the conventional CRP (cCRP) is below the limit of detection, to study the arithmetic influence of low CRP values obtained by high sensitivity CRP (hsCRP) in ASDAS-CRP results and to test agreement between different ASDAS formulae. Methods: Patients with axial spondyloarthritis and cCRP below the limit of detection (5mg/L, n=257) were selected. ASDAS-cCRP was calculated using eleven imputation strategies for the cCRP (range 0-5, at 0.5 intervals). ASDAS-hsCRP and ASDAS-ESR were also calculated. Agreement between ASDAS formulae was tested. Results: ASDAS-CRP calculated with the cCRP imputation values of 1.5 and 2.0mg/L and ASDAS-erythrocyte sedimentation rate (ESR) had better agreement with ASDAS-hsCRP than other imputed formulae. Disagreement was mainly in lower disease activity states (inactive/moderate disease activity). When the CRP value is <2mg/L, the CRP component of the ASDAS-CRP formula can take very low values that may result in inappropriately low ASDAS-CRP values. Conclusion: When the cCRP is below the limit of detection or when the hsCRP is <2mg/L, the constant value of 2mg/L should be used to calculate ASDAS-CRP. There is good agreement between ASDAS-hsCRP and ASDAS-ESR; however, formulae are not interchangeable. | URI: | https://hdl.handle.net/10316/27651 | ISSN: | 2326-5205 | DOI: | 10.1002/art.38921 | Direitos: | embargoedAccess |
Aparece nas coleções: | FMUC Medicina - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
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How to calculate the ASDAS.pdf | 609.98 kB | Adobe PDF | Ver/Abrir |
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