Table 2

Final selection of attributes and attribute levels of decision moment A

Clinical setting: The patient presenting with acute chest pain at the emergency department. Decision: ‘Would you send this patient home without any further diagnostic testing (eg, no serial troponin testing or exercise testing)’?
Attribute	Attribute level
Age (years)	<50
	50–75
	>75
Gender	Male
Gender	Female
Known coronary artery disease	No
Known coronary artery disease	Yes
Chest pain classification based on history taking	A-specific chest pain
	Atypical angina pectoris
	Typical angina pectoris
Symptoms of chest pain still present at presentation	No
Symptoms of chest pain still present at presentation	Yes
Risk factors*	No risk factors
	One risk factor
	More than one risk factor
ECG	Normal
	Atypical changes
	Typical ischaemic changes
Troponin†	Below reference level and representative
	Below reference level, not representative
	Above reference level

*Classic five: diabetes mellitus, hypertension, hypercholesterolaemia, smoking and positive family history.
†According to cardiologists’ own hospital standards.