Data Dredging


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(1) The use of a multiple-comparison method—e.g., Scheffe’s test—which allows investigators performing a study to select group means to test after the experiment begins, by allowing possible comparisons, one of which may suggest a trend in a study, hence the term ‘dredging’
(2) Digging through the data in a clinical trial trying to find statistically significant trends or differences between therapeutic arms
References in periodicals archive ?
By treating the whole modeling process interactively and exploiting high-level knowledge in the form of an ontology, the framework is able to aid the user in a number of ways, including in helping to avoid pitfalls such as data dredging.
Otherwise, data dredging may lead to specious models, which may overfit, generalize poorly, and suggest conclusions that are fallacious.
Indeed, data dredging has been democratized and anyone may use seemingly sophisticated tools to arrive at unsound conclusions.
Results from these evaluations show that the framework can help a nonexpert user avoid problems associated with data dredging.
Data dredging, bias, and confounding: they can all get you into the BMJ and the Friday papers.
By doing a lot of data dredging with the aim of getting some publicity.
It is increasingly apparent that problems such as publication bias, selective analysis and outcome reporting, and data dredging affect disciplines as remote as clinical medicine, omics, animal studies, economics, social sciences, psychology, and neurosciences.
But Caruana exhibits an uncritical understanding of Imre Lakatos's methodological position, on which the idea is based, when he contends that data dredging is how science normally works, so Jesuits are off the hook.
This type of data dredging violates statistical protocol and results in nonsensical, often "significant" results that have little biological meaning relative to proposed hypotheses.
If I understand Henry correctly, he is saying that path analysis is not a data dredging process.
Clinical trial investigators were offended by what they viewed as post hoc data dredging on the part of CMS officials concerned more with costs than what the data showed.
Clinical trial investigators were offended by what they saw as post hoc data dredging on the part of CMS officials concerned more with costs than what the data showed.
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