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.

Descriptor ID	D015982
MeSH Number(s)	N05.715.350.150 N06.850.490.500
Concept/Terms	Bias (Epidemiology) Bias (Epidemiology) Biases, Epidemiologic Epidemiologic Biases Bias, Epidemiologic Biases Biases Bias Truncation Biases Truncation Biases Biases, Truncation Truncation Bias Bias, Truncation Ecological Bias Ecological Bias Ecological Biases Bias, Ecological Fallacy, Ecological Ecological Fallacies Ecological Fallacy Fallacies, Ecological Biases, Ecological Outcome Measurement Errors Outcome Measurement Errors Error, Outcome Measurement Errors, Outcome Measurement Outcome Measurement Error Systematic Bias Systematic Bias Bias, Systematic Bias, Aggregation Bias, Aggregation Aggregation Bias Biases, Statistical Biases, Statistical Statistical Biases Bias, Statistical Statistical Bias

Below are MeSH descriptors whose meaning is more general than "Bias (Epidemiology)".

Below are MeSH descriptors whose meaning is related to "Bias (Epidemiology)".

Below are MeSH descriptors whose meaning is more specific than "Bias (Epidemiology)".