Fig. 3

Expected change in outcome under hypothetical interventions on emergency ambulance dispatch and ASA administration. The figure shows the results of the hypothetical interventions on emergency ambulance dispatch and acetylsalicylic acid administration on 30-day mortality and 1-year combined-outcome among MI patients recorded without chest pain. The results are shown for the total populations and three subgroups (STEMI, NSTEMI, and 1-1-2 emergency calls). Observed outcomes and the expected outcomes had all received emergency ambulances/ASA are also shown for chest pain MI patients (right columns). The intervention As chest pain refers to the hypothetical intervention under which non-chest pain MI patients were as likely to receive emergency dispatch/ASA as observed for the MI patients with chest pain. Similarly, the All intervention refers to the hypothetical intervention where all non-chest pain MI patients received emergency ambulance/ASA. ASA Acetylsalicylic acid