Fig. 2

a, b, c, d Box-plot of respondents’ assessment of bystander’s performance of first aid measures, as well as opinion of the expert group, for each film (1–8) for each of the four interventions a airway management, b bleeding control, c recovery position, and d hypothermia prevention). The whiskers in the box-plots represent the complete range for each film, outliers included. -1 – 5 represents whether the four first aid measure were performed and quality of performance. -1 = not performed, the patient was not in need of the measure. 0 = not performed, but the patient was in need of the measure. 1 = very poor quality, 2 = poor quality, 3 = moderate quality, 4 = high quality, 5 = very high quality. : expert opinion