1. Validation of the new classification criteria for systemic lupus erythematosus on a patient cohort from a national referral center: a retrospective study
- Author
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Marija Bakula, Nada Čikeš, and Branimir Anić
- Subjects
Adult ,Male ,medicine.medical_specialty ,MEDLINE ,Sensitivity and Specificity ,Severity of Illness Index ,Cohort Studies ,Hospitals, University ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,systemic lupus erythematosus ,immune system diseases ,Internal medicine ,Severity of illness ,medicine ,Humans ,Lupus Erythematosus, Systemic ,030212 general & internal medicine ,skin and connective tissue diseases ,Referral and Consultation ,Aged ,Retrospective Studies ,Aged, 80 and over ,Lupus erythematosus ,business.industry ,Reproducibility of Results ,Retrospective cohort study ,General Medicine ,Middle Aged ,medicine.disease ,Rheumatology ,Logistic Models ,ROC Curve ,Family medicine ,Cohort ,Referral center ,Female ,business ,Research Article ,Cohort study - Abstract
AIM: To validate Systemic Lupus International Collaborating Clinics (SLICC)-12 and American College of Rheumatology (ACR)-97 classification criteria on a patient cohort from the University Hospital Center Zagreb. ----- METHODS: This retrospective study, conducted from 2014 to 2016, involved 308 patients with systemic lupus erythematosus (SLE) (n=146) and SLE-allied conditions (n=162). Patients' medical charts were evaluated by an expert rheumatologist to confirm the clinical diagnosis, regardless of the number of the ACR-97 criteria met. Overall sensitivity and specificity, as well as the sensitivity and specificity according to disease duration, were compared between ACR-97 and SLICC-12 classifications. Predictive value for SLE for both classifications was assessed using logistic regression and receiver operating characteristic (ROC) curves. ----- RESULTS: The SLICC-12 criteria had significantly higher sensitivity in early disease, which increased with disease duration. The ACR-97 criteria had higher specificity. The specificity of the SLICC-12 criteria was low and decreased with disease duration. Regression analysis demonstrated the superiority of the SLICC-12 classification criteria over the ACR-97 criteria, with areas under the ROC curve of 0.801 and 0.780, respectively. ----- CONCLUSION: Although the SLICC-12 criteria were superior to the ACR-97 and were more sensitive for diagnosing early SLE, their specificity in our population was too low. The sensitivity of the SLICC-12 classification is increased by better defined clinical features within each criterion. Our results contribute to the current initiative for developing new criteria for SLE.
- Published
- 2019
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