Table 2.

Variables and performance measures to be collected

Category	Elements
Demographics	Unique patient ID, sex, age, marital status, nationality, occupation, education, insurance payer, mode of arrival
Risk factors	Tobacco use, family history of premature CAD, diabetes, hypertension, hyperlipidaemia, renal insufficiency, chronic lung disease
Medical history	Angina, MI, catheterisation with stenosis ≥50%, revascularisation, heart failure, PAD, cerebrovascular events (stroke), use of aspirin within 7 days
Prehospital care	Time of symptoms onset, time of decision to seek physician, prehospital medication and ECG examination
ED presentation	Character of chief complaint, associated symptoms, time course of symptom complex, vital signs at time of presentation, evidence of heart failure, height, weight, time of arrival
Initial evaluation	Serial ECGs and timing, ECG interpretation, serial cardiac markers and timing, values of cardiac markers, estimated risk level, initial diagnostic impression
Further diagnostic testing	Stress testing, non-invasive angiogram, chest X-ray, UCG, diagnostic coronary angiography
Patient course	Medications given in ED, reperfusion therapies for ACS (thrombolysis, primary PCI and CABG surgery), triage in ED, costs in ED, triage after ED
Outcomes	MACE (death from all causes, non-fatal AMI, urgent revascularisation, stroke, cardiac arrest, cardiogenic shock), ED revisiting, rehospitalisation
Primary measures	The time to first ECG; receipt of troponin testing; receipt of primary reperfusion therapy for ST segment elevation ACS; provision of angiography for troponin-positive patients
Secondary measures	Receipt of non-invasive cardiac imaging tests for patients with suspected ACS, definite ACS, troponin-positive test and ischaemia in initial ECG; receipt of angiography for patients with suspected ACS, definite ACS and ischaemia in initial ECG; receipt of reperfusion therapy for patients with suspected ACS, definite ACS, troponin-positive test and ischaemia in initial ECG; hospital admission rate

ACS, acute coronary syndrome; AMI, acute myocardial infarction; CABG, coronary artery bypass grafting; CAD, coronary artery disease; ED, emergency department; ID, identity document; MACE, major adverse cardiac event; MI, myocardial infarction; PAD, peripheral artery disease; PCI, percutaneous coronary intervention; UCG, ultrasonic cardiogram.