Skip to main content

Table 1 Patient characteristics for transferred v non-transferred patients and rural v urban patients*

From: Does interhospital transfer improve outcome of acute myocardial infarction? A propensity score analysis from the Cardiovascular Cooperative Project

 

Non-Transferred

N = 132,765

Transferred

N = 51,530

 

Urban

N = 148,471

Rural

N = 35,824

 

Continuous Variables

      
 

Mean

Mean

p-value

Mean

Mean

p-value

Age

77.2

73.5

< 0.001

76.0

76.7

< 0.001

Charlson Score

0.72

0.55

< 0.001

0.67

0.68

0.06

Krumholz Predicted Mortality

0.19

0.15

< 0.001

0.18

0.18

0.07

APACHE Score

9.9

8.2

< 0.001

9.4

9.6

< 0.001

SBP on Admittance

144

141

< 0.001

142

146

< 0.001

Creatinine on Admission

1.4

1.3

< 0.001

1.4

1.4

0.12

WBC on Admission

11.0

10.6

< 0.001

10.9

10.8

< 0.001

Categorical Variables

      
 

%

%

p-value

%

%

p-value

Female

50

44

< 0.001

48

49

<0.001

African American

6

4

< 0.001

6

5

< 0.001

Terminal Illness

0.4

0.2

< 0.001

0.4

0.4

0.76

Diabetes

31

29

< 0.001

31

31

0.77

Chronic Renal Insufficiency

5

3

< 0.001

5

4

< 0.001

Hypertension

62

61

< 0.001

63

59

< 0.001

Malignancy

3

2

< 0.001

3

3

0.63

History of Heart Failure

24

13

< 0.001

21

22

< 0.001

History of CAD

40

36

< 0.001

39

37

< 0.001

History of Acute MI

32

28

< 0.001

31

31

0.08

History of PCTA

7

9

< 0.001

8

5

< 0.001

History of Bypass Surgery

13

12

< 0.001

13

11

< 0.001

Shock on Admittance

5

4

< 0.001

5

3

< 0.001

Cardiac Arrest

15

12

< 0.001

14

16

< 0.001

Heart Failure on Admission

51

37

< 0.001

48

46

< 0.001

Angina on Admission

2

3

< 0.001

2

3

< 0.001

Abnormal Rhythm on Admission

49

42

< 0.001

47

44

< 0.001

Anterior or Lateral MI

47

46

0.40

47

46

< 0.001

  1. *Because the CCP includes such a large number of subjects, there are statistically significant differences that do not necessarily represent clinically significant differences.