Bias
A systematic error that may distort the results of a study because of weaknesses in its design, analysis, or reporting.
Note 1: There are many different types of bias, including allocation bias, attrition bias, detection bias, outcome reporting bias, and selection bias. See the Catalogue of bias web site referenced below for further definitions.
Note 2: Related terms include confounder.
Reference
Original reference: Catalogue of Bias - Catalog of Bias Badenoch D, Heneghan C, Nunan D, Spencer EA, editors. Catalogue of bias. Oxford, UK: University of Oxford. Centre for Evidence-Based Medicine; 2018.