New Patient-Oriented Diagnostic Test Characteristics Analogous to the Likelihood Ratios Convey Information on Trustfulness

Making sense of diagnostic test likelihood ratios.

Likelihood ratios: getting diagnostic testing into perspective.

In modern medicine, sophisticated laboratory tests and imaging studies are often emphasized at the expense of history and physical examination, rather than complementing clinical assessment. Ancillary testing often fails to advance the diagnostic process, and increases patient risk and the expense of medical care. The relative value of clinical evaluation and technological methods is rarely con...

part 3: positive and negative likelihood ratios of diagnostic tests

in the previous two parts of educational manuscript series in emergency, we explained some screening characteristics of diagnostic tests including accuracy, sensitivity, specificity, and positive and negative predictive values. in the 3rd  part we aimed to explain positive and negative likelihood ratio (lr) as one of the most reliable performance measures of a diagnostic test. to better underst...

Slopes of a receiver operating characteristic curve and likelihood ratios for a diagnostic test.

This paper clarifies two important concepts in clinical epidemiology: the slope of a receiver operating characteristic (ROC) curve and the likelihood ratio. It points out that there are three types of slopes in an ROC curve--the tangent at a point on the curve, the slope between the origin and a point on the curve, and the slope between two points on the curve. It also points out that there are...

Using Visuals to Convey Information

This paper summarizes the literature on visualisation and information visualisation and provides a broad view of available systems and techniques. The paper also argues that the use of visuals can help conveying information, and that can be an advantage to the use of visualisation and information visualisation to support information management.