Results 141 to 150 of about 587,571 (190)

Perceptions of orthodontic treatment need: Receiver Operating Characteristic analysis

Community Dentistry and Oral Epidemiology, 1996
Abstract This study aimed to investigate the variations in dentists' perception of need for orthodontic treatment. Sixteen dentists viewed forty clinical vignettes and recorded their decisions according to the certainty with which they would offer treatment for each case.
Bearn, David, Wright, Jean, Kay, Elizabeth, O'Brien, Kevin   +3 more
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Multireader, multicase receiver operating characteristic methodology: A bootstrap analysis

Academic Radiology, 1995
We evaluated by bootstrapping the conclusions obtained by the Dorfman-Berbaum-Metz (DBM) receiver operating characteristic (ROC) method and by the Toledano-Gatsonis (TG) method on a well-known data set.We bootstrapped in two ways, resampled cases while holding readers fixed and resampled both cases and readers.When an analysis of variance of ...
D D, Dofrman, K S, Berbaum, R V, Lenth
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Receiver operating characteristic curve analysis of clinical risk models

The Annals of Thoracic Surgery, 2001
Receiver operating characteristic (ROC) curve analysis is a useful method to measure the ability of a clinical risk model to discriminate between hospital deaths and survivors. Its use in medicine originated as a method for synthesizing the specificity and sensitivity of diagnostic tests across a spectrum of possible cut points.
G L, Grunkemeier, R, Jin
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Receiver operating characteristic analysis of leukocyte counts in operations for suspected appendicitis

The American Journal of Emergency Medicine, 2008
There has been no clear-cut value of the white blood cell (WBC) count in differential diagnosis of acute appendicitis in emergency medicine. Therefore, the aim of this study was to assess the preoperative WBC counts in 3 groups of patients operated on for a clinical suspicion of acute appendicitis with different findings at appendectomy: uninflamed ...
Yoldas, Omer, Koc, Mahmut, Acar, Atahan, Tez, Mesut, Keskek, Mehmet, Akgul, Ozgur, Gocmen, Erdat   +6 more
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Parametric receiver operating characteristic curve analysis using mathematica

Computer Methods and Programs in Biomedicine, 2002
Several computer programs have been written to perform receiver operating characteristic (ROC) curve analysis, and are available in the public domain. Here, the author provides the theory and description for 'rocMath', a Mathematica program that performs parametric ROC curve analysis.
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Receiver Operating Characteristic (ROC) Analysis

2009
Receiver Operating Characteristic (ROC curves) have been used for years in decision making from signals, such as radar or radiology. Basically they plot the hit rate versus the false alarm rate. They were introduced recently in data mining and machine learning to take into account different misclassification costs, or to deal with skewed class ...
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Receiver operating characteristic analysis of photoreceptor sensitivity

IEEE Transactions on Systems, Man, and Cybernetics, 1983
To understand the workings of neural systems and to place neural modelmaking on a firm foundation, it is useful to frame both experiments and models in the context of receiver operating characteristic analysis (ROC analysis). The presence of noise and of nonlinear signaling are compelling reasons for the use of ROC analysis.
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Analysis of clustered data in receiver operating characteristic studies

Statistical Methods in Medical Research, 1998
Clustered data is not simply correlated data, but has its own unique aspects. In this paper, various methods for correlated receiver operating characteristic (ROC) curve data that have been extended specifically to clustered data are reviewed. For those methods that have not yet been extended, suggestions for their application to clustered ROC studies
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Receiver operating characteristic analysis for biliary complications in liver transplantation

Liver Transplantation and Surgery, 1997
Receiver operating characteristic (ROC) analysis was used to assess the use of the serum chemical markers, gamma-glutamyl transferase (GGT), alkaline phosphatase (AP), and total bilirubin (BR) as tests for biliary complications in patients who had undergone orthotopic liver transplantation.
D P, Dunham, P P, Aran
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Receiver Operating Characteristic (ROC) Analysis for Characterizing Synaptic Efficacy

Journal of Neurophysiology, 2007
The role of background synaptic activity in cortical processing has recently received much attention. How do individual neurons extract information when embedded in a noisy background? When examining the impact of a synaptic input on postsynaptic firing, it is important to distinguish a change in overall firing probability from a true change in ...
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