Main analyses* | Abbreviation | Study population | Hypothetical intervention |
---|---|---|---|
First | As chest pain | All non-chest pain MI patients | Non-chest pain MI patients received emergency ambulances as observed for MI patients with chest pain |
Second | All | All non-chest pain MI patients received emergency ambulances | |
Third | As chest pain | All non-chest pain MI patients who received an emergency ambulance and did not have contraindications of ASA | Non-chest pain MI patients received prehospital ASA as observed for MI patients with chest pain |
Fourth | All | All non-chest pain MI patients received prehospital ASA |