Bias Definition
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Bias:
Any deviation of results or inferences from the truth, or processes leading to such deviation. Bias can result from several sources: one-sided or systematic variations in measurement from the true value (systematic error); flaws in study design; deviation of inferences, interpretations, or analyses based on flawed data or data collection; etc. There is no sense of prejudice or subjectivity implied in the assessment of bias under these conditions.Synonym: aggregation bias, truncation bias, systematic bias, statistical bias, outcome measurement error, epidemiologic bias, ecological fallacy, ecological bias, biases, bias (epidemiology), bia (epidemiology).