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Area under the receiver operating characteristic (AUROC) curve. Association of loss of primary patency and a model including age, history of diabetes, history of smoking, anatomical location of procedure, and initial IABF dichotomized at 500 ml/min. The AUROC curve for our model is 0.9336. The AUROC curve for a perfect diagnostic test would be 1 and a model with no predictive value would be ≤0.5 (solid diagonal line).
