Table 2.

Baseline characteristics for patients with ST-elevation myocardial infarction, according to sex

	Sex; no. (%) of patients*
	Men	Women
Characteristic	n = 6293	n = 2893	p value†
Age, yr, mean (SD)	59.7 (12.3)	68.0 (11.4)	< 0.001
Medical history
Hypertension	3151 (50.1)	1835 (63.4)	< 0.001
Diabetes mellitus	1265 (20.1)	709 (24.5)	< 0.001
Lipid disorders	2443 (38.8)	1102 (38.1)	0.52
Current smoker	3753 (59.6)	900 (31.1)	< 0.001
Prior myocardial infarction	682 (10.8)	253 (8.7)	0.002
Characteristics of the qualifying event
Anterior acute myocardial infarction	3161 (50.2)	1476 (51.0)	0.48
Killip class ≥ 2	1914 (30.4)	1129 (39.0)	< 0.001
Time from symptom onset to admission, h‡	n = 5440	n = 2423
≤2	1874 (34.4)	559 (23.1)	< 0.001
> 2–6	2005 (36.9)	952 (39.3)	< 0.001
> 6–12	656 (12.1)	391 (16.1)	< 0.001
> 12	905 (16.6)	521 (21.5)	< 0.001
Time from symptom onset to thrombolysis, h‡
≤2	1492 (27.4)	378 (15.6)	< 0.001
> 2–6	1452 (26.7)	607 (25.1)	0.13
> 6–12	216 (4.0)	93 (3.8)	0.67
> 12	45 (0.8)	28 (1.2)	0.08
In-hospital medication	n = 6293	n = 2893
Thrombolytic therapy	3367 (53.5)	1179 (40.8)	< 0.001
Anticoagulants	5989 (95.2)	2703 (93.4)	0.001
Antiplatelet drugs	5741 (91.2)	2555 (88.3)	< 0.001
Acetylsalicylic acid	3886 (61.8)	1925 (66.5)	< 0.001
Clopidogrel	114 (1.8)	43 (1.5)	0.08
Acetylsalicylic acid and clopidogrel	1614 (25.6)	548 (18.9)	< 0.001
Other	127 (2.0)	39 (1.3)	0.010
Primary percutaneous intervention	136 (2.2)	43 (1.5)	0.030
Primary percutaneous intervention within 90 minutes from symptom onset	35 (0.6)	2 (0.1)	< 0.001
In-hospital mortality	641 (10.2)	529 (18.3)	< 0.001

^*Unless otherwise indicated.

^†For comparison between men and women.

^‡Data on time to treatment were available for 5440 (86.4%) men and 2423 (83.8%) women. Among patients who received thrombolytic therapy, time from symptom onset to thrombolysis was available for 3205 men (58.9%) and 1106 women (45.6%).