Decision time ≤ 60 min (%)  Decision time > 60 min (%)  p-value (χ2)  Odds ratioa  95% Confidence interval  p-value
Sociodemographic factors
Marital status
 Not married  31.2  43.8  0.053  1
 Married  68.8  56.2   1.85  (1.05 to 3.28)  0.034



Clinical factors
Type of acute coronary syndrome
 UAb/NSTEMIc  22.5  39.3  0.006  1
 STEMId  77.5  60.7   2.26  (1.26 to 4.06)  0.006



Attribution
Symptoms attributed to heart attack
 No  66.4  86.5  0.001  1
 Yes  33.6  13.5   3.24  (1.60 to 6.56)  0.001



Proximal factors
Presence of a bystander
 Absent  37.3  58.3  0.005  1
 Present  62.7  41.7   2.35  (1.28 to 4.31)  0.006
Location at onset
 Home  58.4  75.3  0.009  1
 Other  41.6  24.7   2.42  (1.32 to 4.47)  0.005