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High degree of classification criteria fulfillment among patients with clinical psoriatic arthritis diagnoses in Sweden

Wallman, J. K. (författare)
Alenius, Gerd-Marie, Docent, 1957- (författare)
Umeå universitet,Institutionen för folkhälsa och klinisk medicin
Klingberg, E. (författare)
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Sigurdardottir, V. (författare)
Wedren, S. (författare)
Exarchou, S. (författare)
Lindstrom, U. (författare)
Di Giuseppe, D. (författare)
Askling, J. (författare)
Jacobsson, L. T. H. (författare)
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 (creator_code:org_t)
2020-06-02
2020
Engelska.
Ingår i: Annals of the Rheumatic Diseases. - : BMJ Publishing Group Ltd. - 0003-4967 .- 1468-2060. ; 79, s. 1725-1726
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  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
Abstract Ämnesord
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  • The clinical diagnosis of psoriatic arthritis (PsA) may be challenging. In Sweden, the vast majority of PsA cases are diagnosed within rheumatology or internal medicine (IM). Knowledge of the correspondence between clinical ICD diagnoses and classification criteria fulfillment is crucial to interpret studies identifying cases based on ICD codes.Objectives:To assess the degree to which patients with clinical PsA diagnoses in Sweden fulfill established PsA classification criteria.Methods:Four hundred patients with ≥1 outpatient physician visit to one of five rheumatology or IM departments (3 university/2 county departments, spread across Sweden) 2013-2015 with a main ICD-10 diagnosis of PsA (L40.5/M07.0-M07.3), were randomly selected from the Swedish National Patient Register (80 cases/site). Based on a structured medical record review, positive predictive values (PPV) of a clinical PsA diagnosis (i.e. ≥1 visit with a PsA ICD-10 code) for fulfillment of the following classification criteria were assessed: CASPAR,[1] Moll & Wright,[2] Vasey & Espinoza,[3] and Modified ESSG criteria for PsA,[4] respectively (as well as for any of these); ASAS criteria for peripheral or axial spondyloarthritis (SpA) [5]; and the 1987 ACR criteria for rheumatoid arthritis (RA).[6] Subanalyses regarding CASPAR fulfillment were also performed restricted to patients with available rheumatoid factor and peripheral X-ray status (central CASPAR items; n=227), and among patients with ≥2 ICD codes for PsA, of which ≥1 from a rheumatology/IM department (n=353).Results:Out of 400 clinically diagnosed PsA patients, 343 (86%) fulfilled any of the 4 PsA classification criteria, with a PPV for CASPAR fulfillment of 69% (rising to 73-82% in the subanalyses;Figure 1). Substantial overlap was seen regarding fulfillment of the 4 PsA criteria (Figure 2A). Moreover, 86% fulfilled the ASAS peripheral or axial SpA criteria, while the 1987 ACR definition of RA was met by 27% – in both cases with the great majority also classifiable as PsA (Figure 2B). Most patients not fulfilling any PsA criteria had either no verified arthritis or polyarticular disease (Table). Overall, only 6.5% of the clinical PsA diagnoses were judged as clearly wrong by the rheumatologists performing the medical record assessments.Conclusion:The validity of clinical ICD-10 diagnoses for PsA in the Swedish National Patient Register is good, with a PPV of 86% for the fulfillment of established PsA classification criteria.References:[1]Arthritis Rheum2006;54:2665-73[2]Semin Arthritis Rheum 1973;3:55-78[3]In: Calin A, editor. Spondyloarthropathies. Orlando: Grune & Stratton; 1984:151-85[4]Ann Rheum Dis2005;64(Suppl II):ii3–ii8[5]Ann Rheum Dis2011;70:25-31[6]Arthritis Rheum1988;31:315-24Patient characteristics (n=400), stratified by classification criteria fulfillmentFulfilling anyPsA criterian=343Not fulfilling anyPsA criterian=57Male sex, %4644Age, yrs; mean (SD)59 (14)62 (15)Symptom duration, yrs; mean (SD)18 (12)16 (13)Psoriasis, %8947Nail psoriasis, %3811Arthritis, %9358 Monoarthritis, %*7.90 Oligoarthritis, %*4522 Polyarthritis, %*4778DIP-joint arthritis, %287.0Dactylitis, %281.8Enthesitis, %4219Inflammatory back pain, %275.3RF positive, %5.814ACPA positive, %4.43.5Arthritic X-ray changes in hands/feet, %3321* % of patients with arthritis of known distribution. Missing data: 0-4%, except forRF (33%), ACPA (37%) and X-ray changes (20%).Acknowledgments:This work was supported by Celgene, Novartis, Pfizer, Reumatikerförbundet and Psoriasisförbundet.Disclosure of Interests:Johan K Wallman Consultant of: AbbVie, Celgene, Eli Lilly, Novartis and UCB Pharma, Gerd-Marie Alenius: None declared, Eva Klingberg Grant/research support from: Roche, Consultant of: Novartis, Speakers bureau: Eli Lilly, Valgerdur Sigurdardottir Consultant of: Novartis, Sara Wedrén: None declared, Sofia Exarchou: None declared, Ulf Lindström: None declared, Daniela Di Giuseppe: None declared, Johan Askling Grant/research support from: JA acts or has acted as PI for agreements between Karolinska Institutet and the following entities, mainly in the context of the ARTIS national safety monitoring programme of immunomodulators in rheumatology: Abbvie, BMS, Eli Lilly, Merck, MSD, Pfizer, Roche, Samsung Bioepis, Sanofi, and UCB Pharma, Lennart T.H. Jacobsson Consultant of: AbbVie, Eli Lilly, Janssen, Novartis and Pfizer

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Reumatologi och inflammation (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Rheumatology and Autoimmunity (hsv//eng)

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