Catalogofbias.org

Catalogue of Bias

WEBThe Catalogue of Bias provides definitions, explanations and examples of the most important biases that can affect health research.

Actived: 6 days ago

URL: https://catalogofbias.org/

Better late than never:

WEBA 1979 paper entitled “Bias in Analytic Research”, published in the Journal of Chronic Diseases, by David Sackett reported the first draft of a ‘catalog of biases which …

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Outcome reporting bias

WEBSelective reporting of outcomes can potentially compromise the validity of a trial and any subsequent meta-analyses. Selective reporting can occur through different ways: 1. …

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Misclassification bias

WEBPrevention of bias from misclassification includes using the most accurate measurements available and thinking carefully about the categorisation of individuals or data points into …

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Confounding by indication

WEBFigure 1. The general principle of confounding by indication. Confounding by indication is very common in observational studies (e.g. case-control and cohort studies). It can …

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Reporting biases

WEBReporting biases is an umbrella term that covers a range of different types of biases. It is described as the most significant form of scientific misconduct ( Al-Marzouki et al. 2005 …

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Association or causation

WEBA statistical association between two variables merely implies that knowing the value of one variable provides information about the value of the other. It does not …

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Publication bias

WEBDickersin & Min define publication bias as the failure to publish the results of a study “on the basis of the direction or strength of the study findings.”. This non-publication introduces …

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Unacceptable disease bias

WEBBackground. “When disorders are socially unacceptable, such as insanity they tend to be under-reported.” (Sackett et al. 1979) Unacceptable disease bias is a subtype of …

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Wrong sample size bias

WEBLarge sample sizes can also prove to be wrong. In the 1936 US election, the largest public opinion poll in US history amongst 2.4 million respondents got it completely wrong. The …

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Prevalence-incidence (Neyman) bias

WEBPrevalence-incidence bias or Neyman’s bias occurs due to the timing of when cases are included in a research study. David Sackett wrote in 1979: “A late look at those exposed …

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