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Table 1 Frequency distribution of EMS- and patient-related characteristics for calls categorized as “unclear problem” (callunclear) and “symptom-specific” categories (callspecific) given as number (N) and percent (%)

From: The difficult medical emergency call: A register-based study of predictors and outcomes

Variable

 

Callspecific

Callunclear

Total

 

N = 64,026 (82%)

N = 14,014 (18%)

N = 78,040

EMS-related

Time of day

Daytime

28,350 (44.3)

7,023 (50.1)

35,373 (45.3)

Evening

21,877 (34.2)

4,505 (32.2)

26,382 (33.8)

Night

13,799 (21.6)

2,486 (17.7)

16,285 (20.9)

Time of week

Weekdays

45,459 (71.0)

10,317 (73.6)

55,776 (71.5)

Weekend

18,567 (29.0)

3,697 (26.4)

22,264 (28.5)

Assessed emergency priority level by medical dispatcher

Level A

30,181 (47.1)

2,651 (18.9)

32,832 (42.0)

Level B

29,604 (46.2)

9,842 (70.2)

39,446 (50.6)

Level C

2,247 (3.5)

211 (1.5)

2,458 (3.2)

Level D

98 (0.2)

51 (0.4)

149 (0.2)

Level E

1,896 (3.0)

1,259 (9.0)

3,155 (4.0)

Response provided by medical dispatcherA

Red response

30,808 (48.1)

3,232 (23.1)

34,040 (43.6)

Orange response

30,370 (47.4)

9,150 (65.3)

39,520 (50.6)

Yellow response

446 (0.7)

146 (1.0)

592 (0.8)

Blue response

2,402 (3.8)

1,486 (10.6)

3,888 (5.0)

Patient-related

Age

18–30

10,045 (15.7)

1,585 (11.3)

11,630 (14.9)

31–65

26,969 (42.1)

5,366 (38.3)

32,335 (41.4)

66–75

10,519 (16.4)

2,735 (19.5)

13,254 (17.0)

76+

16,493 (25.8)

4,328 (30.9)

20,821 (26.7)

Gender

Male

31,732 (49.5)

6,750 (48.3)

38,482 (49.3)

Female

32,318 (50.5)

7,240 (51.8)

39,558 (50.7)

Civil status

Cohabiting

26,625 (41.6)

5,861 (41.8)

32,486 (41.6)

Single

36,094 (56.4)

7,907 (56.4)

44,001 (56.4)

Missing

1,307 (2.0)

246 (1.8)

1,553 (2.0)

Ethnicity

Danish origin

54,271 (84.8)

11,678 (83.3)

65,949 (84.5)

Non-Danish origin

8,445 (13.2)

2,088 (14.9)

10,533 (13.5)

Missing value

1,310 (2.1)

248 (1.8)

1,558 (2.0)

Educational level

Elementary school

22,910 (35.8)

4,807 (34.3)

27,717 (35.5)

Short education

24,869 (38.8)

5,634 (40.2)

30,503 (39.1)

Medium/long education

10,388 (16.2)

2,253 (16.1)

12,641 (16.2)

Missing value

5,859 (9.2)

1,320 (9.4)

7,179 (9.2)

Income

1 Low

15,565 (24.3)

3,382 (24.1)

18,947 (24.3)

2

16,250 (25.4)

3,566 (25.5)

19,816 (25.4)

3

11,733 (18.3)

2,605 (18.6)

14,338 (18.4)

4

9,379 (14.7)

2,033 (14.5)

11,412 (14.6)

5 High

8,165 (12.8)

1,898 (13.5)

10,063 (12.9)

Missing value

2,934 (4.6)

530 (3.8)

3,464 (4.4)

Employment status

EmployedB

19,708 (30.8)

3,640 (26.0)

23,348 (29.9)

UnemployedC

10,796 (16.9)

2,115 (15.1)

12,911 (16.5)

Student

1,873 (2.9)

281 (2.0)

2,154 (2.8)

RetiredD

28,356 (44.3)

7,389 (52.7)

35,745 (45.8)

“Other”

1,979 (3.1)

343 (2.5)

2,322 (3.0)

Missing value

1,314 (2.1)

246 (1.8)

1,560 (2.0)

Comorbidity

None

32,907 (51.4)

6,800 (48.5)

39,707 (50.9)

Mild

12,829 (20.0)

2,777 (19.8)

15,606 (20.0)

Severe

18,290 (28.6)

4,437 (31.7)

22,727 (29.1)

  1. A: Red response, acute with lights and siren; orange response, acute, no lights and siren; yellow response, transport with patient observation; blue response, medical advice, no ambulance. B: employed includes employed and unemployment insurance receiver. C: Unemployed includes unemployed individuals, social security recipients and individuals on early retirement. D: retired includes receiving state pension or being voluntary early retired