ROC curve


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re·ceiv·er op·er·at·ing char·ac·ter·is·tic curve

1. a plot of percentage of true positive results versus percentage of false positive results, usually in a trial of a diagnostic test.
2. a graphic means of assessing the ability of a screening test to discriminate between healthy and diseased people.
Synonym(s): ROC curve

ROC curve

Receiver operating characteristic curve. A graphic depiction of the relationship between the true positive ratio (sensitivity) and false positive ratio (1) specificity as a function of the cut-off level of a disease or condition marker.

curve

(kurv) [L. curvus, bent, crooked]
A bend, chart, or graph.

bell curve

Normal distribution.

curve of Carus

See: curve of Carus

characteristic curve

Sensitometric curve.

dental curve

Curve of Spee.

D log E curve

Sensitometric curve.

dose response curve

A graph charting the effect of a specific dose of drug, chemical, or ionizing radiation.

dye-dilution curve

A graph of the disappearance rate of a known amount of injected dye from the circulation; used to measure cardiac function.

epidemic curve

A chart or graph in which the number of new cases of an illness is plotted over time.

Gaussian curve

Normal distribution.

growth curve

A graph of heights and weights, head circumference, and body mass index of infants and children of various ages. A line connecting the data points produces the curve. Usually the changes in height and weight are shown on the same chart. Growth charts are specific for age and gender.

learning curve

The effect of learning or practice on the performance of an intellectual or physical task. The term describes the acquisition of competence with experience, time, and training.

normal curve

Normal distribution.

receiver operating curve

Abbreviation: ROC curve
A plot of the fraction of true positives test results versus the fraction of false positive test results; the sensitivity of a test versus (1-the test specificity).
Synonym: receiver operating characteristic

sensitometric curve

In radiographic film analysis, the curve derived by graphing the exposure to the film versus the film density. Analysis yields information about the contrast, speed, latitude, and maximum and minimum densities of the film or film-screen system. Digital radiography systems exhibit linear curves.
Synonym: characteristic curve; D log E curve; Hurter and Driffield curve

curve of Spee

See: curve of Spee

Stephan curve

See: Stephan curve

survival curve

In radiobiology, a dose response curve.

time-temperature cooling curve

The mathematical relation that plots the physical and chemical behaviors of dental (and other) materials as their temperature decreases over time.

receiver operating curve

Abbreviation: ROC curve
A plot of the fraction of true positives test results versus the fraction of false positive test results; the sensitivity of a test versus (1-the test specificity).
Synonym: receiver operating characteristic
See also: curve

ROC curve

acronym for receiver operating characteristic curve. A graphical method of assessing the characteristic of a diagnostic test.
References in periodicals archive ?
Specifically addressing this point, the ROC curve analysis showed an area under the curve of 0.
Statistical indicators for ROC curves of each test Area under Standard 95% Confidence the curve error interval FL test 1.
Pairwise comparison of differences between area under ROC curve and p value of noninvasive parameters in determining esophageal varices Differences between AUC SE 95% CI Platelets~Portal Vein 0.
The cutoff points corresponding to the largest Youden index of the ROC curves, i.
13] In our study, the ROC curve analysis showed the best cut-off value of 2.
The ROC curve in this example supports this conclusion because it lies very close to the upper left border, reflecting a large AUC.
ROC curves graphically illustrate the variable binary diagnostic performance of a test procedure as a function of a change in the decision limit.
All anthropometric indices performed well in the identification of abdominal adiposity (confidence interval of 95% of the area under the ROC curve > 0.
The best threshold for the ROC curve was defined as that which maximizes the Youden index (sensitivity + specificity -1).
ROC curve is a two-dimensional curve, in which horizontal coordinate represents FPR (false positive rate) and longitudinal coordinate represents TPR (true positive rate).
ROC curve analysis of the diagnostic value of total IgE showed an area under the curve (AUC) = 0.