Table 1.

Guideline for keywords used for phase 1 coding.

Keyword	Dedoose query
Acute coronary syndrome	acute coronary syndrome OR ACS
Analgesic	analgesic
Antiplatelet	antiplatelet
Ambulance	ambulance
Aspirin	aspirin
Beta blocker	beta blocker
Clopidogrel	clopidogrel
Defibrillator	defibrillator OR AED
Electrocardiogram	electrocardiogram OR ECG OR EKG
Emergency	emergency
Medication	medication OR medicine
Nitroglycerin	nitroglycerin
Non-ST segment elevation myocardial infarction	non-ST segment elevation myocardial infarction OR NSTEMI
Oxygen	oxygen
Paramedic	paramedic
Payment	payment
Policy	policy or policies
Pre-hospital	pre-hospital
ST segment elevation myocardial infarction	ST segment elevation myocardial infarction OR STEMI
Telemetry	telemetry OR cardiac monitoring
Thrombolysis/fibrinolysis	thrombolysis OR thrombolytic OR fibrinolysis OR fibrinolytic
Unstable angina	unstable angina