Biases

Here is a list of all Biases in the Catalogue.  Check back regularly as we are adding new ones over time.

 

Diagnostic access bias

Individuals differ in their geographic, temporal and economic access to diagnostic procedures which label them as having a given disease.

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Diagnostic suspicion bias

Knowledge of a subject’s prior exposures or personal biases may influence both the process and the outcome of diagnostic tests.

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Hawthorne effect

When individuals modify an aspect of their behaviour in response to their awareness of being observed.

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Hot stuff bias

When a topic is fashionable (‘hot’)  investigators may be less critical in their approach to their research, and investigators and editors may not be able to resist the temptation to publish the results.

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Information Bias

Bias that arises from systematic differences in the collection, recall, recording or handling of information used in a study.  

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Insensitive measure bias

The use of an insufficiently accurate method to detect the outcome of interest, such that clinically important differences are not detected.

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Lack of blinding

The lack of concealment of an intervention or control treatment received by participants in a clinical trial.

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Mimicry bias

An innocent exposure may become suspicious if, rather than causing disease, it causes a benign disorder which resembles the disease.

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Misclassification bias

Occurs when a study participant is categorised into an incorrect category altering the observed association or research outcome of interest.

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