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Table 1 Standardised differences of patients with traumatic OHCA

From: Epinephrine during resuscitation of traumatic cardiac arrest and increased mortality: a post hoc analysis of prospective observational study

 

Before Matching

After Matching

Epinephrine

no-Epinephrine

Standardised Difference

Epinephrine

no-Epinephrine

Standardised Difference

Case

822

208

 

178

178

 

Age, years, median (IQR)

54

(33)

54

(30)

4.4%

55

(30)

54

(31)

2.5%

 missing data

59

(7.2%)

18

(8.7%)

      

Sex, male, n (%)

581

(70.7%)

133

(63.9%)

14.4%

124

(70.0%)

109

(61.2%)

17.8%

 missing data

0

(0%)

0

(0%)

      

Witness, n (%)

482

(58.8%)

110

(52.9%)

11.9%

102

(57.3%)

90

(50.6%)

13.6%

 missing data

2

(0.2%)

0

(0%)

      

Bystander CPR, n (%)

133

(16.3%)

25

(12.1%)

12.1%

26

(14.6%)

18

(10.1%)

13.7%

 missing data

5

(0.6%)

1

(0.5%)

      

Signs of life at scene, n (%)

84

(10.2%)

8

(3.9%)

25.0%

12

(6.7%)

6

(3.4%)

15.4%

 missing data

0

(0%)

1

(0.5%)

      

Asystole at scene, n (%)

519

(64.4%)

161

(77.4%)

28.9%

132

(74.2%)

143

(80.3%)

14.8%

 missing data

16

(1.9%)

0

(0%)

      

Collapsed to CA during transportation, n (%)

97

(12.0%)

12

(5.8%)

21.8%

15

(8.4%)

8

(4.5%)

16.1%

 missing data

11

(1.3%)

1

(0.5%)

      

Epinephrine prior to hospital arrival, n (%)

94

(12.2%)

11

(5.5%)

23.8%

15

(8.4%)

10

(5.6%)

11.0%

 missing data

54

(6.6%)

9

(4.3%)

      

ROSC prior to hospital arrival, n (%)

23

(2.9%)

15

(7.2%)

20.0%

7

(3.9%)

8

(4.5%)

2.8%

 missing data

19

(2.3%)

0

(0%)

      

Signs of life on hospital arrival, n (%)

25

(3.1%)

21

(10.1%)

28.5%

12

(6.7%)

13

(7.3%)

2.2%

 missing data

21

(2.6%)

1

(0.5%)

      

Asystole on hospital arrival, n (%)

666

(81.8%)

181

(87.4%)

15.6%

157

(88.2%)

160

(89.9%)

5.4%

 missing data

8

(1.0%)

1

(0.5%)

      

Mechanism of Injury, penetrate, n (%)

50

(8.4%)

9

(7.8%)

2.0%

9

(5.1%)

9

(5.1%)

0.0%

 missing data

225

(27.4%)

93

(44.7%)

      

Emergency call to ambulance arrival, mins, median (IQR)

7

(4)

7

(4)

0.8%

7

(5)

7

(4)

5.7%

 missing data

59

(7.2%)

18

(8.7%)

      

CPR duration before hospital arrival, mins, median (IQR)

21

(11)

22

(10)

20.7%

21

(11)

22

(10)

13.9%

 missing data

59

(7.2%)

18

(8.7%)

      
  1. OHCA Out-of-Hospital Cardiac Arrest, CPR Cardiopulmonary Resuscitation, CA Cardiac Arrest, ROSC Return of Spontaneous Circulation