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Table 2 Effect of a prompting scene timer on scene times for single casualty traumatic incidents attended by HEMS

From: The ticking clock: does actively making an enhanced care team aware of the passage of time improve pre-hospital scene time following traumatic incidents?

Group

No Scene Timer

Scene Timer

Difference in mins.

% Change

Significance p

Number

Median (Mean)

IQR (SD)

Number

Median (Mean)

IQR (SD)

All Incidents

134

25.5

16.3

143

23.0

11.0

2.5

9.8

0.13

Adults (age > =18)

122

26.0

16.3

130

23.0

11.3

3.0

11.5

0.20

Children (age < 18)

12

(24.4)

(12.1)

13

(22.5)

(7.7)

1.9

7.7

0.45

RTC

53

27.0

17.0

62

23.0

13.5

4.0

14.8

0.13

Non-RTC Mechanism

81

25.0

18.5

81

24.0

11.0

1.0

4.0

0.27

Blunt Trauma

123

27.0

17.0

132

24.0

10.8

3.0

11.1

0.08

Penetrating Trauma

11

8.0

5.0

11

11.0

14.0

−3.0

−37.5

0.64

Day

105

27.0

16.0

103

23.0

12.0

4.0

14.8

0.08

Night

29

(24.1)

(13.0)

40

(24.9)

(9.1)

−0.9

−3.6

0.89

GCS > 8

89

22.0

18.0

104

23.0

12.8

−1.0

− 4.5

0.92

GCS < =8

45

(29.7)

(10.1)

39

(25.2)

(8.1)

4.5

15.1

0.028

RSI

44

34.0

13. 0

42

28.0

11.0

6.0

17.6

0.007

No RSI

90

19.0

14.3

101

21.0

11.0

−2.0

−10.5

0.96

Blood products

15

(27.3)

(12.1)

15

(30.8)

(8.8)

−3.5

−12.9

0.37

No Blood products

119

25.0

16.0

128

23.0

11.0

2.0

8.0

0.21

Thoracostomy

11

(32.5)

(15.7)

16

(31.9)

(12.5)

0.5

1.6

0.93

No Thoracostomy

123

25.0

17.0

127

23.0

10.0

2.0

8.0

0.25

CPR

9

(26.7)

(9.9)

8

(29.1)

(13.3)

−2.5

−9.2

0.76

Helicopter Transport

49

27.0

13.5

84

24.0

11.0

3.0

11.1

0.28

Ambulance Transport

85

23.0

19.0

59

21.0

11.0

2.0

8.7

0.50

  1. RTC road traffic collision, GCS Glasgow coma scale, RSI rapid sequence induction, CPRcardiopulmonary resuscitation;