“…The development of a practice and assessment guideline for IO and LMA insertion in the emergency and pre-hospital contexts is essential to ensure reliable and accurate judgements of student and clinician performance. The Delphi technique has been used to develop such guidelines for other medical skills (Huang et al, 2009;Riesenberg, Berg, Berg, Schaeffer, Mealey, Davis, Weber, King, Justice, Geffe and Tinkoff, 2013;Berg et al, 2014;Hartman et al, 2014) and while some variation in specific applications of the Delphi method exists, several features are common including participant anonymnity, multiple iterative stages interspersed with controlled group feedback and aggregating group responses (Hasson et al, 2000). Expert judgements are pooled from participating individuals in order to establish concensus and agreement where existing information and guidance are limited (Keeney et al, 2011).…”