Table 1. Characteristics of Patients With Acute Myocardial Infarction (AMI) According to the Presence of Cardiogenic Shock.

	Total Sample			Patients Hospitalized in 2001, 2003, and 2005
	Shock Present (+) (n=905)	Shock Absent (-) (n=12,758)	p Value	Shock Present (+) (n=173)	Shock Absent (-) (n=3,126)	p Value
Characteristic
Age (mean, yrs)	71.8	68.7	<0.001	72.6	71.5	0.32
Male (%)	53.4	58.9	<0.01	57.8	55.3	0.51
Body mass index (%)
<25	40.3	36.5	0.10	38.5	33.8	0.09
25-29.9	38.0	36.3		40.8	36.9
≥30	21.7	27.2		20.8	29.4
Duration of prehospital delay (mean, hrs)**	2.0	3.6	0.10	3.8	4.1	0.69
Do not resuscitate orders***	42.8	20.6	<0.001	41.0	25.1	<0.001
Pre-Existing Conditions (%)
Angina	25.4	24.9	0.43	20.2	20.4	0.97
Diabetes	32.2	27.8	<0.01	41.0	33.2	<0.05
Heart failure	23.2	18.8	<0.001	28.3	24.9	0.31
Hypertension	56.4	57.7	0.43	74.0	72.4	0.65
Stroke	11.3	9.6	0.12	6.4	12.4	<0.05
Acute Presenting Symptoms (%)
Chest pain*	69.0	72.7	0.16	68.2	72.2	0.26
Diaphoresis*	39.6	37.6	0.48	36.4	36.4	0.99
Dyspnea*	64.5	57.5	<.05	65.9	60.0	0.12
AMI type (%)
Initial	60.0	65.5	<0.01	60.7	65.2	0.23
Q wave	56.2	39.7	<0.001	30.1	19.6	<0.01
Clinical Complications (%)
Third degree heart block	15.7	3.3	<0.001	9.8	2.1	<0.001
Atrial fibrillation	30.3	16.2	<0.001	45.1	20.5	<0.001
Heart failure	69.4	37.4	<0.001	75.1	36.9	<0.001
Stroke**	1.4	1.6	0.62	1.2	1.9	0.48
Physiologic findings at the time of hospital admission (mean)
Systolic blood pressure (mmHg)	119.5	143.7	<0.001	118.5	143.5	<0.001
Diastolic blood pressure (mmHg)	69.2	77.8	<0.001	68.6	77.0	<0.001
Heart rate (bpm)**	88.1	86.2	0.05	90.1	86.8	0.08
Laboratory findings at the time of hospital admission (mean, mg/dl)
Serum glucose****	228.7	182.1	<0.001	221.2	183.0	<0.01
Estimated GFR findings (%)****	51.0	61.3	<0.001	50.5	58.5	<0.001
Serum cholesterol	194.3	208.7	<0.001	156.3	177.6	<0.001

^*97-05 only

^**86-05 only

^***91-05 only

^****95-05 only