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Repeated scoring with the adult appendicitis score improves the sensitivity and the specificity of appendicitis diagnosis in patients with early equivocal signs of appendicitis: a secondary analysis. [PDF]

Eur J Trauma Emerg Surg
Lastunen KS, Leppäniemi AK, Mentula PJ.
europepmc   +1 more source

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Proper receiver operating characteristic analysis: The bigamma model

Academic Radiology, 1997
The standard binormal model is the most commonly used model for fitting receiver operating characteristic rating data; however, it sometimes produces inappropriate fits that cross the chance line with degenerate data sets. The authors proposed and evaluated a proper constant-shape bigamma model to handle binormal degeneracy.Monte Carlo samples were ...
Kevin Berbaum, James Hanley, Charles E Metz   +2 more
exaly   +3 more sources

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 ...
Kevin Berbaum, Donald D Dorfman, Russell V Lenth   +2 more
exaly   +3 more sources

Receiver Operating Characteristic Analysis

American Journal of Roentgenology, 2011
AJR 2011; 197:W784 0361–803X/11/1974–W784 © American Roentgen Ray Society Receiver Operating Characteristic Analysis I read with great interest the article by Ahn et al. [1], “Biopsy of Thyroid Nodules: Comparison of Three Sets of Guidelines,” in the January 2010 issue of the AJR.
Annemarie, Klingenstein, Ingrid, Haritoglou, Markus M, Schaumberger, Martin M, Nentwich, Rüdiger, Hein, Ulrich C, Schaller   +5 more
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Receiver Operating Characteristic Analysis of Diagnostic Skill

Medical Care, 1983
In an effort to assess diagnostic skill, the authors collected estimates of the probability of positive results for 392 chest x-rays and 595 throat cultures from 56 pediatricians at different stages in training. Positivity rates were 28.6% for x-rays and 32.9% for throat cultures.
D M, Berwick, L A, Thibodeau
openaire   +2 more sources

Receiver Operator characteristic (ROC) Analysis without Truth

Medical Decision Making, 1990
Receiver operator characteristic (ROC) analysis, the preferred method of evaluating diag nostic imaging tests, requires an independent assessment of the true state of disease, which can be difficult to obtain and is often of questionable accuracy. A new method of analysis is described which does not require independent truth data and which can be used ...
R M, Henkelman, I, Kay, M J, Bronskill
openaire   +2 more sources

Multiple Classification and Receiver Operating Characteristic (ROC) Analysis

Medical Decision Making, 1987
The receiver operating characteristic (ROC) curve was applied to observer performances in a multiple-alternative decision task. It was shown that the probability of correct classification, a performance criterion often maximized in multiple-classification procedures, corresponds to the area under an appropriately constructed ROC curve.
W R, Steinbach, K, Richter
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Receiver Operator Characteristic Analysis of Endoscopy as a Test for Gastritis

Digestive Diseases and Sciences, 1997
Endoscopic evaluation of the presence or absence of gastritis is often performed in lieu of biopsy and histologic diagnosis. The purpose of our study was to assess the value of endoscopic examination as a diagnostic test for gastritis. Two endoscopists prospectively assessed the antrum of 73 patients undergoing upper gastrointestinal endoscopy and ...
P A, Belair, D C, Metz, D O, Faigel, E E, Furth   +3 more
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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
openaire   +3 more sources