To better understand the persistent presence, diversity, and impact of biases, we are compiling a Catalogue of Bias, stemming from original work by David Sackett. The entries are a work in progress and describe a wide range of biases – outlining their potential impact in research studies.
Sackett recognised the importance of bias in research. His 1979 paper “Bias in Analytic Research”, published in the Journal of Chronic Diseases, reported the first draft of a ‘catalog of biases which may distort the design, execution, analysis, and interpretation of research.’ Sackett catalogued 35 biases that arise in sampling and measurement, in the context of clinical trials, and listed 56 biases potentially affecting case-control and cohort studies.
He proposed
the continued development of an annotated catalogue of bias as a priority for research.