Guidance on Communication of Uncertainty in Scientific Assessments

uncertainty communication, risk communication, transparency, probability, likelihood
First published in the EFSA Journal
16 gennaio 2019
21 novembre 2018
Guidance of EFSA


This document provides guidance for communicators on how to communicate the various expressions of uncertainty described in EFSA's document: ‘Guidance on uncertainty analysis in scientific assessments’. It also contains specific guidance for assessors on how best to report the various expressions of uncertainty. The document provides a template for identifying expressions of uncertainty in scientific assessments and locating the specific guidance for each expression. The guidance is structured according to EFSA's three broadly defined categories of target audience: ‘entry’, ‘informed’ and ‘technical’ levels. Communicators should use the guidance for entry and informed audiences, while assessors should use the guidance for the technical level. The guidance was formulated using evidence from the scientific literature, grey literature and two EFSA research studies, or based on judgement and reasoning where evidence was incomplete or missing. The limitations of the evidence sources inform the recommendations for further research on uncertainty communication.

European Food Safety Authority
sc.secretrariat [at]
EFSA Journal 2019;17(1):5520
Question Number
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