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Table 1 Patient characteristics at the time of out-of-hospital cardiac arrest according to single or multiple dispatch centre, 2005–2013: Northern French Alps Cardiac Arrest Registry (n = 6871)

From: Impact of an emergency medical dispatch system on survival from out-of-hospital cardiac arrest: a population-based study

Characteristics

Single dispatch centre (n = 2257)

Multiple dispatch centre (n = 4614)

Test value

p-value

First call to, n (%)

  

14.5

<0.001

 1–8/1–1–2 FD emergency number

1233 (54.6)

2744 (59.5)

  

 1–5 EMS emergency number

1024 (45.4)

1870 (40.5)

  

Age, mean (SD), y

69 (15)

68 (15)

–2.6

0.008

Male, n (%)

1655 (73.3)

3274 (71.0)

4.3

0.038

Witness, n (%)

1666 (73.8)

3701 (80.2)

32.3

<0.001

 Bystander witness

1355 (60.0)

3137 (68.0)

  

 EMS witness

311 (13.8)

564 (12.2)

  

CPR by bystander witness, n (%)

693 (30.7)

1270 (27.5)

7.5

0.006

Cardiac arrest occurred at home, n (%)

1618 (71.7)

3417 (74.1)

10.5

0.015

Shockable rhythm, n(%)

656 (29.1)

1233 (26.7)

94.7

<0.001

Median time in min from call to

    

 Arrival on scene

10 [714]

11 [816]

10.8

<0.001

 First CPR attempted

5 [0–11]

8 [0–14]

6.5

<0.001

 First shock attempted

12 [718]

14 [919]

2.9

0.035

Initial admission to cath lab, n (%)

115 (20.8)

257 (28.8)

11.7

0.001

Any ROSC, n (%)

705 (31.3)

1055 (22.9)

55.7

<0.001

Hospital admission alive, n (%)

554 (24.6)

891 (19.3)

25.0

<0.001

  1. Statistical tests used were: Student T test for age, Mann–Whitney U test for times from call to arrival on scene, to fisrt CPR attempted, to first shock. Chi-2 test was used for the others variables
  2. FD fire department, EMS emergency medical service, CPR cardiopulmonary resuscitation, SD standard deviation, IQR interquartile range, Cath lab catheterization laboratory, ROSC return of spontaneous circulation