Table 2.

Prioritisation criteria and methods used in horizon scanning to assess signals

Prioritisation criteria (assessing signals)	Prioritisation methods
Potential impact on outcomes Size make-up of the affected population Expected variation of impact Likely time frame Evidence of effectiveness Relevance to strategic and political priorities Effect on other related policies Desirability Factual basis Requirement of availability of expertise Novelty	Qualitative approach Quantitative or semiquantitative approaches Rating and ranking Best-worst scaling Risk analysis Standardisation of signals Delphi approach Public consultation Engagement of experts Mixed methods