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Bias (2004) - lists lots of types of bias (open access)

Dolphin

Senior Member
Messages
17,567
It can be useful to be able to name a bias one is trying to explain. It can mean one has to try less hard to try to explain it and also it can look more impressive (and convincing). So I thought I'd highlight this article.

However, there may be better articles out there that give more examples to better explain the point.

Free full text: http://jech.bmj.com/content/58/8/635.full

J Epidemiol Community Health 2004;58:635-641 doi:10.1136/jech.2003.008466

Continuing professional education

Bias

M Delgado-Rodríguez1, J Llorca2

Abstract

The concept of bias is the lack of internal validity or incorrect assessment of the association between an exposure and an effect in the target population in which the statistic estimated has an expectation that does not equal the true value.

Biases can be classified by the research stage in which they occur or by the direction of change in a estimate.

The most important biases are those produced in the definition and selection of the study population, data collection, and the association between different determinants of an effect in the population.

A definition of the most common biases occurring in these stages is given.