We provide a model of decision making under uncertainty in which the decision maker reacts to imprecision of the available data. Data is represented by a set of probability distributions. We axiomatize a decision criterion of the maxmin expected utility type, in which the set of priors explicitly depends on the available data. The central axiom is one of aversion towards imprecision of the info...

We evaluated the performance of the i-STAT Portable Clinical Analyzer, a hand-held instrument that, with its current cartridge, analyzes for electrolytes, urea nitrogen, glucose, and hematocrit in approximately 60 microL of whole blood in approximately 90 s. Accuracy, imprecision, and linearity studies were performed with aqueous controls and standards and by split-sample analysis. Intrarun imp...

OBJECTIVES A request to report laboratory values to a specific number of decimal places represents a delicate balance between clinical interpretation of a true analytical change versus laboratory understanding of analytical imprecision and significant figures. Prostate specific antigen (PSA) was used as an example to determine if an immunoassay routinely reported to the hundredths decimal place...

This paper offers an analysis of metalinguistic comparatives such as more dumb than crazy in which they differ from ordinary comparatives in the scale on which they compare: ordinary comparatives use scales lexically determined by particular adjectives, but metalinguistic ones use a generallyavailable scale of imprecision or ‘pragmatic slack’. To implement this idea, I propose a novel compositi...

Abstract This paper presents an imprecise predictive inference method for accelerated life testing. The is largely nonparametric, with a basic parametric function to link different stress levels. log-rank test used provide imprecision the parameter, which in turn provides robustness resulting lower and upper survival functions future observation at normal level. An application using data from l...

BACKGROUND Insulin-like growth factor 1 (IGF-1)(7) is a key mediator of growth hormone (GH) action and a well-characterized biomarker of GH abuse. Current immunoassays for IGF-1 suffer from poor concordance between platforms, which makes comparison of results between laboratories difficult. Although previous work has demonstrated good interlaboratory imprecision of LC-MS/MS methods when plasma ...

OBJECTIVES The objective of our article is to show how "quality of evidence" and "imprecision," as they are defined in Grading of Recommendations Assessment, Development, and Evaluation (GRADE) articles, may lead to confusion. We focus only on the context of systematic reviews. STUDY DESIGN AND SETTING We analyze, with the aid of standard probabilistic and statistical concepts, the concepts o...

We use standard results from convex geometry to obtain representations of the prior and posterior degrees of imprecision in terms of width functions and difference bodies. These representations are used to construct algorithms for the calculation of the prior and the posterior degree of imprecision. 2006 Elsevier Inc. All rights reserved.

The selective multitest Boehringer Mannheim Hitachi 717 analyser was evaluated according to the guidelines of the Comisión de Instrumentación de la Sociedad Española de Química Clinica and the European Committee for Clinical Laboratory Standards. The evaluation was performed in two steps: examination of the analytical units and evaluation in routine operation.THE EVALUATION OF THE ANALYTICAL UN...

On-Line Analytical Processing (OLAP) technologies are being used widely, but the lack of effective means of handling data imprecision, which occurs when exact values are not known precisely or are entirely missing, represents a major obstacle in applying these technologies in many domains. This paper develops techniques for handling imprecision that aim to maximally reuse existing OLAP modeling...