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Receiver–operating characteristic (ROC) analysis of the value of the SOFA, SAPS II, and APACHE II score in predicting in-hospital mortality among RA (A) and non-RA (B) patients. See Table 4 for numbers. APACHE II indicates Acute Physiology and Chronic Health Evaluation II; RA, rheumatoid arthritis; SAPS II, Simplified Acute Physiology Score II; SOFA, Sequential Organ Failure Assessment.
