Table 2

Baseline Clinical Features by Years of Education

Years of Education
Characteristics<8 yrs (n = 2,249)8–12 yrs (n = 6,982)>12–16 yrs (n = 1,633)>16 yrs (n = 462)p Value
Presenting heart rate (beats/min)73 (62, 87)74 (62, 86)72 (62, 84)74 (62, 85)<0.0001
Presenting SBP (mm Hg)137 (120, 153)135 (120, 150)134 (118, 150)136 (118, 151)<0.0001
Presenting DBP (mm Hg)80 (70, 90)80 (70, 90)80 (70, 90)80 (70, 91)0.1569
Killip class ≥II458 (20.6)959 (13.8)151 (9.3)30 (6.5)<0.0001
Location of MI<0.0001
 Anterior1,141 (50.7)3,307 (47.4)720 (44.1)221 (47.8)
 Inferior997 (44.3)3,417 (48.9)863 (52.8)227 (49.1)
Time to hospital (h)1.8 (1.1, 2.8)1.6 (1.0, 2.5)1.4 (0.8, 2.3)1.3 (0.8, 2.0)<0.0001
Time to treatment (h)2.9 (2.0, 4.0)2.6 (1.8, 3.8)2.4 (1.7, 3.5)2.3 (1.6, 3.2)<0.0001
Time to randomization (h)2.6 (1.8, 3.8)2.3 (1.6, 3.5)2.2 (1.4, 3.2)2.0 (1.3, 3.0)<0.0001
Time from hospital arrival to treatment (h)1.0 (0.7, 1.5)0.9 (0.7, 1.4)0.9 (0.6, 1.3)0.8 (0.6, 1.3)<0.0001

Data are presented as median (25th, 75th percentile) or n (%) unless otherwise noted.

DBP = diastolic blood pressure; MI = myocardial infarction; SBP = systolic blood pressure.