TABLE 3.

Degree of uncertainty in the quality and availability of data and scientific evidence in relation to qualitative risk assessment.

Uncertainty Category	Interpretation
Low	Complete data available; strong evidence provided in multiple references and authors report similar conclusions
Moderate†	Incomplete data available; lack of surveillance data; strong evidence provided in multiple references; conclusions reported by review authors vary
High	Little or no data available; evidence provided in unpublished reports or observations, authors give conclusions that vary considerably

^†, The present study.

Source: Adapted from Costard, S., 2008, Introduction to risk analysis and risk assessment, Royal Veterinary College, University of London, London, viewed 04 December 2018, from https://assets.publishing.service.gov.uk/media/57a08bd1ed915d3cfd000f68/WKS081002_Annex5.pdf.