Figure 2
From: Earlier reperfusion in patients with ST-elevation Myocardial infarction by use of helicopter
Association between health care system delay (time from emergency call to first coronary intervention) and distance from the scene of event to the Percutaneous Coronary Intervention center in patients with ST-elevation myocardial infarction. Stratified according to mode of transportation (by ambulance vehicle or helicopter). Plots based on polynomial regression analysis describes the association between transport distance and system delay in patients transported by ambulance and helicopter, respectively.