Department of Emergency Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan, ROC Division of Infectious Diseases, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan, ROC Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan, ROC Department of Internal Medicine, National Taiwan University Hospital, Tai...

The receiver operating characteristic (ROC) curve, which is defined as a plot of test sensitivity as they coordinate versus its 1-specificity or false positive rate (FPR) as the x coordinate, is an effective method of evaluating the performance of diagnostic tests. The purpose of this article is to provide a nonmathematical introduction to ROC analysis. Important concepts involved in the correc...

Recollection has long been thought to play a key role in associative recognition tasks. Evidence that associative recollection might be a threshold process has come from analyses of the associative recognition receiver operating characteristic (ROC). Specifically, the ROC is not as curvilinear as a signal detection theory requires. In addition, the Z-ROC is usually curvilinear, as a threshold r...

Receiver operating characteristic (ROC) analysis is a widely accepted method for analyzing and comparing the diagnostic accuracy of radiological tests. In this paper we will explain the basic principles underlying ROC analysis and provide practical information on the use and interpretation of ROC curves. The major applications of ROC analysis will be discussed and their limitations will be addr...

a Institute of Information Science, Academia Sinica, Taipei City 11529, Taiwan, ROC Department of Computer Science and Information Engineering, Hungkuang University, Taichung City 433, Taiwan, ROC Department of Computer Science, National Chiao Tung University, Hsinchu 30010, Taiwan, ROC Department of Computer Science and Information Engineering, Providence University, Taichung City 433, Taiwan,...

The approximately 3-kb nin region of bacteriophage lambda, located between genes P and Q contains transcription termination signals as well as 10 open reading frames. Deletions in the nin region frees phage growth from dependence on the lambda-encoded N-transcription antitermination system, conferring a Nin phenotype (N-independence). A subregion of nin, roc, is defined by a 1.9-kb deletion (de...

The receiver operating characteristic (ROC) curve displays the capacity of a marker or diagnostic test to discriminate between two groups of subjects, cases versus controls. We present a comprehensive suite of Stata commands for performing ROC analysis. Non-parametric, semiparametric and parametric estimators are calculated. Comparisons between curves are based on the area or partial area under...

Receiver operating characteristic (ROC) analysis provides the most comprehensive description of diagnostic accuracy available to date, because it estimates and reports all of the combinations of sensitivity and specificity that a diagnostic test is able to provide. After sketching the 6 levels at which diagnostic efficacy can be assessed, this paper explains the conceptual foundations of conven...

objective: when none of digital systems and scanners is accessible and it is essential to have digitized images of conventional radiographs, digital cameras can be used. the aim of this study was to investigate whether digital images obtained by different resolutions of a digital camera are matched to the original radiographs in evaluation of caries. methods: in this diagnostic accuracy in vitr...

Department of Photonics and The Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan, ROC b Institute of Physics, National Chiao Tung University, Hsinchu 300, Taiwan, ROC Department of Materials Science and Engineering, National TsingHua University, Hsinchu 300, Taiwan, ROC Material and Chemical Research Laboratories, Industrial Technology Research Insti...