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Table 1 variables and cut-off points

From: A retrospective comparison between non-conveyed and conveyed patients in ambulance care

Variable

Cut-off point

Codes

Demographics

 Age

N/A

Years

 Gender

 

1. Male

2. Female

 Geographical location

N/A

1. Highly urban (≥2.500 home address per km2)

2. Urban (1.500–2.500 home address per km2)

3. Average urban (1.000–1.500 home address per km2)

4. Rural (500–1.000 home address per km2)

5. Highly rural (≤500 home address per km2)

Initial diagnosis

 ICD-10

 

1. Certain infectious and parasitic diseases

2. Neoplasms

3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

4. Endocrine, nutritional and metabolic diseases

5. Mental, Behavioral and Neurodevelopmental disorders

6. Diseases of the nervous system

7. Diseases of the eye and adnexa

8. Diseases of the ear and mastoid process

9. Diseases of the circulatory system

10. Diseases of the respiratory system

11. Diseases of the digestive system

12. Diseases of the skin and subcutaneous tissue

13. Diseases of the musculoskeletal system and connective tissue

14. Diseases of the genitourinary system

15. Pregnancy, childbirth and the puerperium

16. Certain conditions originating in the perinatal period

17. Congenital malformations, deformations and chromosomal abnormalities

18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

19. Injury, poisoning and certain other consequences of external causes

20. External causes of morbidity

21. Factors influencing health status and contact with health services

22. Codes for special purposes

23. Other/non classifiable

Vital functions & observation scales

 Airway

1. Airway obstructed

2. Airway free

1. Abnormal

2. Normal

 Breathing

1. Insufficient breathing

2. Sufficient breathing

1. Abnormal

2. Normal

 Respiratory rate (/min.)

Adults (> 12 years)

1. < 12/min.

2. 12–20/min.

3. > 20/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children < 1 year

1. < 30 min.

2. 30–40/min.

3. > 40/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 1–2 years

1. < 25 min.

2. 25–30/min.

3. > 30/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 3–5 years

1. < 25 min.

2. 25–30/min.

3. > 30/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 6–12 years

1. < 20 min.

2. 20–25/min.

3. > 25/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children < 1 year

1. < 30 min.

2. 30–40/min.

3. > 40/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 Oxygen saturation (%)

1. < 96%

2. 96–100%

1. Abnormal (too low)

2. Normal

 Carbon dioxide level (kPa)

1. < 4,5 kPa

2. 4,5 kPa – 6,0 kPa

3. > 6,0 kPa

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 Circulation

1. Insufficient

2. Sufficient

1. Abnormal

2. Normal

 Heart rate (/min.)

Adults (> 12 years)

1. < 60/min.

2. 60–100/min.

3. > 100/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children < 1 year

1. < 110/min.

2. 110–160/min.

3. > 160/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 1–2 years

1. < 100/min

2. 100–150/min.

3. > 150/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 3–5 years

1. < 95/min.

2. 95–140/min.

3. > 140/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 6–12 years

1. < 80/min.

2. 80–120/min.

3. > 120/min.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 Systolic blood pressure (mmHg)

Adults (> 12 years)

1. < 90 mmHg

2. 90–160 mmHg

3. > 160 mmHg

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children < 1 year

1. < 70 mmHg

2. 70–90 mmHg

3. > 90 mmHg

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 1–2 years

1. < 80 mmHg

2. 80–95 mmHg

3. > 95 mmHg

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 3–5 years

1. < 80 mmHg

2. 80–100 mmHg

3. > 100 mmHg

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 

Children 6–12 years

1. < 90 mmHg

2. 90–110 mmHg

3. > 110 mmHg

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

 Temperature (°C)

1. < 36,1 °C

2. 36,1–38,0 °C

3. > 38,0 °C

1. Abnormal (to low)

2. Normal

3. Abnormal (too high)

 Glasgow Coma Scale (EMV)

1. EMV < 15

2. EMV 15

1. Abnormal

2. Normal

AVPU Scale

1. One of the following: Verbal, Unresponsive, Pain

2. Alert

1. Abnormal

2. Normal

Pupillary response

1. Unequal and non-reactive to light

2. Equal And Reactive to Light

1. Abnormal

2. Normal

Blood glucose level

1. < 3,5 mmol/L.

2. 3,5–14,0 mmol/L.

3. >  14,0 mmol/L.

1. Abnormal (too low)

2. Normal

3. Abnormal (too high)

Disability

1. Episode of unconsciousness

2. Conscious

1. Abnormal

2. Normal

Revised Trauma Score (RTS)

Adults (> 12 years)

1. < 12

2. 12

1. Abnormal (too low)

2. Normal

Pediatric Trauma Score (PTS)

Children (< 12 years)

1. < 12

2. 12

1. Abnormal (too low)

2. Normal

Pain (NRS)

1. NRS 4–10

2. NRS 0–3

1. Abnormal

2. Normal

Sinus rhythm

1. Not present

2. Present

1. Abnormal

2. Normal