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Table 2 Baseline characteristics of all patients adjusted to age. Data are given in n (%) or median [Q1;Q3]

From: Factors influencing on-scene time in a physician-staffed helicopter emergency medical service (HEMS): a retrospective observational study

 

All patients

Children

(< 16 years)

Adults

(≥ 16 years)

p

N

 

N = 68,333

N = 8,803

N = 59,530

  

Age (years)

50.0 [27.0;65.0]

10.0 [5.00;13.0]

54.0 [36.0;68.0]

0.000

68,333

Sex:

   

 < 0.001

68,333

Female

24,317 (35.6%)

3,628 (41.2%)

20,689 (34.8%)

  

Male

44,010 (64.4%)

5,174 (58.8%)

38,836 (65.2%)

  

Other

6 (0.01%)

1 (0.01%)

5 (0.01%)

  

National Advisory Committee for Aeronautics (NACA) score :

   

 < 0.001

68,333

NACA I–III

32,496 (47.6%)

5,396 (61.3%)

27,100 (45.5%)

  

NACA IV–VI

35,837 (52.4%)

3,407 (38.7%)

32,430 (54.5%)

  

Glasgow Coma Scale (GCS):

   

 < 0.001

64,918

3

5,106 (7.87%)

307 (3.64%)

4,799 (8.49%)

  

4

335 (0.52%)

27 (0.32%)

308 (0.55%)

  

5

318 (0.49%)

34 (0.40%)

284 (0.50%)

  

6

558 (0.86%)

72 (0.85%)

486 (0.86%)

  

7

523 (0.81%)

66 (0.78%)

457 (0.81%)

  

8

519 (0.80%)

76 (0.90%)

443 (0.78%)

  

9

505 (0.78%)

97 (1.15%)

408 (0.72%)

  

10

780 (1.20%)

124 (1.47%)

656 (1.16%)

  

11

869 (1.34%)

122 (1.45%)

747 (1.32%)

  

12

938 (1.44%)

132 (1.57%)

806 (1.43%)

  

13

1,892 (2.91%)

262 (3.11%)

1,630 (2.89%)

  

14

6,238 (9.61%)

737 (8.75%)

5501 (9.74%)

  

15

46,337 (71.4%)

6,369 (75.6%)

39,968 (70.7%)

  

Location

   

 < 0.001

62,158

Urban

32,283 (51.9%)

3,789 (46.4%)

28,494 (52.8%)

  

Remote

29,875 (48.1%)

4,381 (53.6%)

25,494 (47.2%)

  

Helicopter hoist operation (HHO):

   

 < 0.001

68,333

No

60,785 (89.0%)

8,527 (96.9%)

52,258 (87.8%)

  

Yes

7,548 (11.0%)

276 (3.14%)

7,272 (12.2%)

  

Activity:

   

 < 0.001

63,943

Traffic

9,301 (14.5%)

821 (9.5%)

8,480 (15.3%)

  

Sport (Summer)

4,204 (6.6%)

399 (4.6%)

3,805 (6.9%)

  

Sport Mountains (Summer)

5,727 (9.0%)

317 (3.7%)

5,410 (9.8%)

  

Sport (Winter)

16,970 (26.5%)

3,977 (45.8%)

12,993 (23.5%)

  

Sport Mountains (Winter)

1,197 (1.9%)

13 (0.15%)

1,184 (2.14%)

  

Water Sports

579 (0.9%)

113 (1.30%)

466 (0.84%)

  

Other

25,965 (40.6%)

3,046 (35.1%)

22,919 (41.5%)

  

Time of day:

   

 < 0.001

68,333

Daytime (07:00–19:00)

58,842 (86.1%)

7,818 (88.8%)

51,024 (85.7%)

  

Night-time (otherwise)

9,491 (13.9%)

985 (11.2%)

8,506 (14.3%)

  

Prehospital time (min)

50.6 [41.0;62.0]

47.0 [39.0;57.0]

51.0 [41.5;63.0]

 < 0.001

64,899

On-scene time (min)

21.0 [15.0;28.6]

19.0 [14.0;25.0]

21.0 [15.2;29.0]

 < 0.001

64,765