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Egyptian Rheumatology and Rehabilitation
Fig. 2 | Egyptian Rheumatology and Rehabilitation

Fig. 2

From: Headache in patients with systemic lupus erythematosus: characteristics, brain MRI patterns, and impact

Fig. 2

ROC curve for the performance SDI in prediction of MRI changes. ROC curve analysis showed that SDI ≥ 2.5 can significantly predict MRI changes in SLE patients with headache with 75% sensitivity, 82.6% specificity, 60% PPV, and 90.5% NPV; AUC (95%CI) = 0.864 (0.74–0.99). SDI, SLE International Collaborating Clinics/American College of Rheumatology Damage Index; MRI, magnetic resonance imaging; PPV, positive predictive value; NPV, negative predictive value; AUC, area under the ROC curve

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