(English) This is an essay. It expresses the opinions and ideas of some Wikimedians but may not have wide support. This is not policy on Meta, but it may be a policy or guideline on other Wikimedia projects. Feel free to update this page as needed, or use the discussion page to propose major changes.
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Systemic bias is any (generally) unintentional bias arising from constraints.

Experimental Bias

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Examples of experimental systemic bias include observer bias, selection bias and diagnostic bias.

Diagnostic Bias

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Here the nature or effectiveness of the diagnostic method varies with the variable under test. For example when diagnosing uterine cancer, a common technique for diagnosis has a higher effectiveness in those using oral contraceptives due to the increased probability of breakthrough bleeding.

Personal Bias

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Examples of personal systemic bias are cultural, notational and infrastructural.

The Systemic Bias of Wikipedia arises from constraints of this project.