operating characteristic curve


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Fig. 61. Operating characteristic curve.

operating characteristic curve

a line which shows the relationship between the QUALITY of batches of raw materials or components and the probability of accepting any given batch. Fig 61 shows an operating characteristic curve in which the vertical axis represents the probability of accepting a batch of raw materials or components (or the percentage of batches accepted from multiple batches) while the horizontal axis shows the percentage of defective units in a batch or batches of materials or components.

The operating characteristic curve is used as part of an ACCEPTANCE SAMPLING scheme and shows the performance of the sampling plan for any batch quality characteristic.

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The receiver operating characteristic curve analysis confirmed the positive value of NGAL for predicting AKI (46.5%) at the postoperative 2nd hour (Table 4).
Area Under Receiver Operating Characteristic Curve Values of Laboratory Tests for Rheumatoid Arthritis Diagnosis Assay AUROC (95% CI) RF, IU/mL 0.836 (0.797-0.875) Anti-CCP by Elecsys, (b) U/mL 0.865 (0.829-0.901) Anti-CCP by ADVIA Centaur, 0.867 (0.829-0.904) (c) U/mL RF + anti-CCP by ADVIA 0.890 (0.853-0.926) Centaur, U/mL Diagnosis Assay Difference (a) (95% CI) P Value (a) RF, IU/mL -0.030 (-0.067 to 0.006) .10 Anti-CCP by Elecsys, (b) U/mL 0.002 (-0.016 to 0.019) .85 Anti-CCP by ADVIA Centaur, (c) U/mL RF + anti-CCP by ADVIA 0.023 (0.002-0.045) .04 Centaur, U/mL Abbreviations: Anti-CCP, anti-cyclic citrullinated peptides;AUROC, area under receiver operating characteristic curve;RF, rheumatoid factor.
AUC, area under the receiver operating characteristic curve; CI, confidence interval; ETI, endotracheal intubation; ICU, intensive care unit.
Caption: Figure 3: The receiver operating characteristic curve analysis of myoglobin within 4 h of onset of acute myocardial infarction
Based on receiver operating characteristic curve with area under the curve of 0.76, cutoff NLR value of 1.93 had 83% sensitivity and 54% specificity [95% confidence interval, 0.66-0.85] in differentiating SLE patients with or without nephritis (Figure 1).
Results showed that, for differentiating between athletes who did and did not have concussion, the advanced analysis had an area under the receiver operating characteristic curve of 83%.
In receiver operating characteristic curve analysis, only AST in both sexes and AFP in women failed to show significant associations with MetS.
For each perfusion measurement, we estimated the area under the empirical receiver operating characteristic curve (AUC) to evaluate the accuracy of separating malignant lesions from benign lesions.
The inconsistency of "optimal" cutpoints obtained using two criteria based on the receiver operating characteristic curve. Am J Epidemiol 2006; 163:670-675.
The area under the receiver operating characteristic curve of APACHE IV was 0.937, however, higher than the value of 0.88 reported in the original study by Zimmerman et al.