Figure 2.

Diagnosis consistency between hospital admission and discharge of EMS-treated patients with ACS before and after dispatch with the optimized MPDS. Data are reported as the proportion of each diagnosis upon admission among the cases with certain diagnosis at discharge. Cohen κ values were computed in 3 certain types of ACS (STEMI, NSTEMI, UA) diagnosis between admission and discharge. Non-ACS cases include pulmonary embolism, aortic dissection, and non-cardiogenic chest pain. Other cases include non–chest pain and unknown diagnosis. ACS: acute coronary syndrome; MPDS: medical priority dispatch system; STEMI: ST-elevation myocardial infarction; NSTEMI: non–ST-elevation myocardial infarction; UA: unstable angina pectoris.