Table. Examples of varying types of study design.

Study	Inclusion criteria	Latecomers	Method
NRMI-2 (1999)	Acute myocardial infarction	> 3 hours	Chart review
Sheifer et al. (2000)	Acute myocardial infarction	> 6 hours	Chart review
Ottesen et al. (2003)	Acute coronary syndrome	Not defined	Interview
McKinley et al. (2004)	Acute myocardial infarction	> 1 hour	Interview + Chart review
ARIC (2005)	Acute myocardial infarction	> 4 hours	Chart review
Taylor et al. (2005)	Undifferentiated chest pain	> 3 hours	Interview
GREECS (2006)	STEMI *1 / NSTEMI *2 / unstable angina pectoris	> 2 hours	Interview

^*1 STEMI, ST-segment elevation myocardial infarction

^*2 NSTEMI, non-ST-segment elevation myocardial infarction