N(%) or mean ± SD
Sociodemographic factors
Men/women  178/50
Age (years)  59.0 ± SD 11.2
Ethnicity: White European  180 (78.9)
Married  146 (64.0)



Socioeconomic factors
Educational status
 High School/University qualification  77 (33.8)
 Below High School qualification  53 (23.2)
 No educational qualifications  98 (43.0)
Cardiac history and risk factors
Previous myocardial infarction  26 (11.5)
Hypertensive  107 (46.9)
Hypercholesterolemic  104 (47.1)
Diabetic  33 (13.5)
Current smoker  97 (42.5)
Body Mass Index (kg/m2)  27.2 ± SD 4.5
Physical activity
 None  149 (65.6)
 Up to 2 times per week  44 (19.4)
 > 2 times per week  34 (15.0)



Attribution
Symptoms attributed to heart attack  58 (25.6)



Clinical factors
Type of acute coronary syndrome
 UAa/NSTEMIb  67 (29.4)
 STEMIc  161 (70.6)
Number of pain symptoms (in addition to chest pain)
 None  35 (15.4)
 1–3  127 (55.7)
 4–8  66 (28.9)
Number of non-pain symptoms
 None  47 (20.6)
 1–2  108 (47.4)
 3–6  73 (32.0)
Intensity of pain (0–10)
 < 6  45 (30.4)
 6–8  45 (30.4)
 9–10  58 (39.2)



Proximal factors
Time of symptom onset (h)
 0001–1200  122 (53.5)
 1201–2400  106 (46.5)
Day of onset: weekday  145 (63.6)
Bystander present  100 (54.6)
Location: at home  147 (64.8)
Emergency medical services first contact for help  77/171 (45.0)