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confounding |
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confounding [konfoun′ding] 1 interference by a third variable so as to distort the association being studied between two other variables, because of a strong relationship with both of the other variables. 2 a relationship between two causal factors such that their individual contributions cannot be separated. confounding when the effects of two, or more, processes on results cannot be separated, the results are said to be confounded, a cause of bias in disease studies. confounding factor one which is distributed non-randomly with respect to the independent (exposure) or dependent (outcome) variable which is the subject of an enquiry. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Since IQ is strongly heredity, the parents' IQs, education and resulting social status could have been confounding variables in previous studies. If reading level were a possible confounding variable, the researcher can use a statistical analysis called analysis of covariance, in which reading level is designated the covariate. 5) relied on routine healthcare records for diagnosis/surveillance and matched case patients with controls on only 3 confounding variables. |
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