information bias


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information bias

Epidemiology The bias that arises in a clinical study because of misclassification of the level of exposure to the agent or factor being assessed and/or misclassification of the disease itself; a type of bias that occurs when measurement of information–eg, exposure or disease—differs among study groups. See Bias.

information bias

The mistaken use of information that has no value in making clinical decisions. It is based on the incorrect belief that more information, even irrelevant information, must always be acquired before making a decision.
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Despite some limitations of the study, namely the observational design and the possible effects of information bias, and the need for randomized clinical studies, the investigators added: "The accumulating evidence suggests that we must limit NSAID use to the absolute minimum in patients with established cardiovascular disease.
His topics include causality and comparative studies, varieties of bias, confounding, intermediate causal factors, information bias, and contending with bias.
Define selection bias, recall bias, interviewer bias, and information bias.
If information obtained differently for cases and controls leads to incorrect study findings, this is called information bias.
This will result in a form of information bias known as partial verification bias (Lijmer et al 1999).
We applied the same hypothesis to absence of information bias for the use of animal fat because this byproduct was allowed in cattle feed and manufacturers would have no reason to hide data.
Previous studies of how parental atopy and exposure to dampness and molds contribute to the risk of asthma have been mainly cross-sectional or prevalent case-control studies, where selection and information bias and temporality constitute problems.
E-Business Assist UK Ltd has established a number of successful websites with an information bias for selected interest groups - for example www.
Common information bias describes how information held in common among groups is more likely to be the focus of a group's discussion than information that is held by one group member.
During the one-day program, participants will examine and the most significant consumer concerns about Web sites: transparency, information bias, site identity, blurring of lines between information and advertising and privacy and security.
through the reduction of nondifferential information bias (3) and/or confounding.
This approach is subject to information bias, which results from the uneven dispersal and use of modern technology throughout the world.

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