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Table 3 Dispatcher performance

From: Description of call handling in emergency medical dispatch centres in Scandinavia: recognition of out-of-hospital cardiac arrests and dispatcher-assisted CPR

Group 1: No CPR prior to call (CPRduring)

Copenhagen (N = 200)

Stockholm (N = 200)

Oslo (N = 200)

p-value

 Consciousness addressed

168/200 (84)

189 /200 (95)

199/200 (100)

p = 0.001

 Unknown

17/200 (9)

–

–

 Breathing addressed

169/200 (85)

196 /200 (98)

199/200 (100)

p < 0.001

 Unknown

19/200 (10)

–

–

 Abnormal breathing addressed

68/200 (34)

13/200 (7)

195/200 (98)

p < 0.001

 Unknown

15/200 (8)

1/200 (1)

–

 OHCA recognition

142/200 (71)

165/200 (83)

192/200 (96)

p < 0.001

 Unknown

13/200 (7)

–

1/200 (1)

 CPR instructions started

99/200 (50)

120/200 (60)

160/200 (80)

p < 0.001

 Unknown

24/200 (12)

–

–

  Dispatcher is assertive when providing CPR instructions

84/99 (85)

101/120 (84)

145/160 (91)

p = 0.2

  Unknown

–

3/120 (3)

–

  Quality assessment

79/99 (80)

89/120 (74)

119/160 (74)

p = 0.2

  Unknown

–

7/120 (6)

–

  Encouraging/motivating techniques in use

69/99 (70)

99/120 (83)

132/160 (83)

p < 0.001

 Chest compressions performed

109/200 (55)

119/200 (60)

157/200 (79)

p < 0.001

 Unknown

–

5/200 (3)

4/200 (2)

 Type of CPR

   

p = 0.3

  30:2

24/109 (22)

30/119 (25)

46/157 (29)

 

  Compressions only

85/109 (78)

77/119 (65)

102/157 (65)

 

  Unknown

–

20/119 (17)

9/157 (6)

 

 BLS competence addressed

88/200 (44)

101/200 (51)

63/200 (32)

p < 0.001

 Unknown

30/200 (15)

1/200 (1)

–

 AED addressed

22/200 (11)

8/200 (4)

6/200 (3)

p < 0.001

 Unknown

51/200 (26)

–

–

 Call continued until EMS arrival

85/200 (43)

128/200 (64)

163/200 (82)

p < 0.001

 Unknown

14/200 (7)

–

3/200 (2)

 Time intervals for recognition and CPR instructions

  Time to OHCA recognition (min:sec)

01:16 [IQR 00:50–02:11]

01:53 [IQR 1:01–3:13]

01:19 [IQR 0:50–2:09]

p < 0.001

  Time to chest compression instructions (min)

02:10 [IQR 01:27–03:25]

03:20 [IQR 02:03–04:56]

02:24 [IQR 01:37–04:00]

p < 0.001

  Time to chest compressions performed (min)

02:35 [IQR 01:45–03:05]

03:50 [IQR 02:30–05:27]

02:58 [IQR 02:09–04:36]

p < 0.001

Group 2: CPR initiated prior to call (CPRprior)

Copenhagen (N = 69)

Stockholm (N = 9)

Oslo (N = 38)

 

 CPR instructions started

28/69 (41)

2/9 (22)

15/38 (40)

 

 Unknown

8/69 (12)

–

–

 

  Dispatcher is assertive when providing CPR instructions

24/28 (86)

2/2 (100)

15/15 (100)

 

  Quality assessment

20/28 (71)

2/2 (100)

12/15 (80)

 

  Encouraging/motivating techniques in use

20/28 (71)

2/2 (100)

14/15 (93)

 

 Type of CPR

  30:2

17/69 (25)

1/9 (11)

7/38 (18)

 

  Compressions only

30/69 (43)

1/9 (11)

12/38 (32)

 

  Unknown

22/69 (32)

7/9 (78)

19/38 (50)

 

 AED addressed

27/69 (39)

3/9 (33)

4/38 (11)

 

 Call continued until EMS arrival

25/69 (36)

4/9 (44)

19/38 (50)

 
  1. Categorical data are presented as numbers (percentages) and were analysed using Pearson chi-squared test. Continuous data are presented as medians (interquartile range) and compared with non-parametric Independent-Samples Kruskal-Wallis test