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Table 1

From: Symptom onset to balloon time in patients with ST-segment elevation myocardial infarction treated by primary coronary angioplasty: influence on ST-segment resolution and on mortality

Symptom to balloon time

<2 hours

2–4 hours

4–6 hours

>6 hours

P value

ST-segment resolution (%)

95

92

86

78

0.0001

Procedural success (%)

97

95

91

84

0.03

Mortality (%)

6

9

12

29

<0.001