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Table 1 Age-related baseline differences

From: Age – related treatment strategy and long-term outcome in acute myocardial infarction patients in the PCI era

Age

≤65 years

>65 years

p

Number of patients

1800

2014

NA

Patients’ characteristics

   

Males

1454 (80.8%)

1132 (56.2%)

<0.001

History of DM

389 (21.6%)

763 (37.9%)

<0.001

History of previous MI

268 (14.9%)

505 (25.1%)

<0.001

Killip class on admission

   

I

1501 (83.4%)

1361 (67.6%)

<0.001

II

179 (9.9%)

410 (20.4%)

<0.001

III

54 (3.0%)

131 (6.5%)

<0.001

IV

66 (3.7%)

112 (5.6%)

0.006

Admission ECG

   

STEMI + new LBBB

1060 (58.9%)

956 (47.5%)

<0.001

NonSTEMI

740 (41.1%)

1058 (52.5%)

<0.001

CAG

   

CAG

1726 (95.9%)

1860 (92.4%)

<0.001

No indication for CAG

74 (4.1%)

154 (7.6%)

<0.001

Number of diseased vessels

   

Single vessel disease

717 (39.8%)

463 (23.0%)

<0.001

Two vessel disease

506 (28.1%)

546 (27.1%)

0.491

Three vessel disease

478 (26.6%)

807 (40.1%)

<0.001

Left main artery disease

25 (1.4%)

44 (2.2%)

0.069

IRA (by CAG or autopsy)

   

Left main

26 (1.4%)

42 (2.1%)

0.143

LAD

660 (36.7%)

763 (37.9%)

0.441

LCX

360 (20.0%)

293 (14.5%)

<0.001

RCA

585 (32.5%)

562 (27.9%)

0.002

ACB

14 (0.8%)

25 (1.2%)

0.197

Not known

155 (8.6%)

329 (16.3%)

<0.001

Initial TIMI flow

   

TIMI 0-1

877 (48.7%)

781 (38.8%)

<0.001

TIMI 2

288 (16.0%)

315 (15.6%)

0.790

TIMI 3

480 (26.7%)

589 (29.2%)

0.077

PCI

   

PCI total number

1541 (85.6%)

1505 (74.7%)

<0.001

No PCI

259 (14.4%)

509 (25.3%)

<0.001

PCI% of CAG

1541/1726 (89.3%)

1505/1860 (80.9%)

<0.001

  1. Numbers in the second and third column represent absolute numbers of patients and percentage of the related group. Statistically significant difference is p < 0.05.
  2. DM diabetes mellitus, MI myocardial infarction, ECG electrocardiogram, STEMI ST segment elevation myocardial infarction, LBBB left bundle branch block, NonSTEMI non-ST elevation myocardial infarction.