Table 3.

Patient descriptors

Data variable No.	Data variable name	Type of data	Data variable categories or values	Type	Definition of data variable	Comments
14	Age	Continuous	Number		The patient's age at the time of event	Utstein Trauma Registry
15	Gender	Nominal	1 = Female	Bullet list	The patient's gender	Utstein Trauma Registry
			2 = Male
			3 = Unknown
16	Co-morbidity	Ordinal	1 = No (ASA-PS = 1)	Bullet list	ASA-PS definition	American Society of Anaesthesiologists
			2 = Yes (ASA-PS = 2-6)		1 = A normal healthy patient
			3 = Unknown		2 = A patient with mild systemic disease
					3 = A patient with severe systemic disease
					4 = A patient with severe systemic disease that is a constant threat to life
					5 = A moribund patient who is not expected to survive without operation
					6 = A declared brain-dead patient whose organs are being removed for donor purposes
17	Medical problem (main reason for response)	Nominal	1 = Cardiac arrest	Bullet list	Select the condition most likely to be the patient's true medical problem	Proposed by project group. Defined according to EED-project and ScanDoc phase 1b. The first 9 categories should include >95% of all medical conditions present in daily work
			2 = Trauma
			3 = Breathing difficulties
			4 = Chest pain
			5 = Stroke
			6 = Acute neurology excluding stroke
			7 = Psychiatry including intoxication
			8 = Obstetrics and childbirth
			9 = Infection
			10 = Other
18	Dominating type of injury	Nominal	1 = Blunt	Bullet list	Indication of the type of injury produced if trauma	Utstein Trauma Registry
			2 = Penetrating
			3 = Unknown
19 a)	Glasgow Coma Scale-first	Ordinal	Number (3-15)		First recorded pre-interventional Glasgow Coma Scale upon arrival of physician-staffed service
b)	Glasgow Coma Scale- last		Number		Glasgow Coma Scale at end of care or patient hand-over
20 a)	Heart rate first	Continuous	Number (per minute)		First heart rate per minute measured by physician-staffed service
b)	Heart rate last		Number		Heart rate per minute at end-of-care or patient hand-over
21 a)	Systolic blood pressure-first	Continuous	Number (mmHg)		First recorded systolic blood pressure measured by physician-staffed service (measured with sphygmomanometer, monitor or intra-arterial line).
b)	Systolic blood pressure-last		Number		Systolic blood pressure at end-of-care or patient handover
22 a)	Cardiac rhythm-first	Ordinal	1 = Sinus rhythm	Bullet list	First cardiac rhythm interpreted by physician-staffed service (minimum 3-channel lead)
			2 = SVES, VESmono
			3 = Atrial Fib/Flutt, AV-block gr. II/III, VESpoly
			4 = VF, VT, Asystole, PEA
			5 = Not recorded
b)	Cardiac rhythm-last		1 = Sinus rhythm		Cardiac rhythm at end of care or patient hand-over
			2 = SVES, VESmono
			3 = Atrial Fib/Flutt, AV-block gr. II/III, VESpoly
			4 = VF, VT, Asystole, PEA
			5 = Not recorded
23 a)	SpO2-first	Continuous	Number (0-100)		First recorded oxygen saturation by physician-staffed service (measured with pulse oxymeter or arterial blood gas (SaO2))
b)	SpO2-last		Number		Oxygen saturation at end-of-care or patient hand-over
24 a)	Pain-first	Ordinal	1 = None	Bullet list	First level of pain assessed by physician-staffed service
			2 = Moderate
			3 = Severe
b)	Pain-last		1 = None		Level of pain at end of care or patient hand-over
			2 = Moderate
			3 = Severe
25 a)	Respiratory rate-first	Continuous	Number (per minute)		First respiratory rate per minute measured by physician-staffed service. If mechanically ventilated, document ventilation rate.
b)	Respiratory rate-last		Number		Respiratory rate at end of care or patient hand-over

ASA-PS: American Society of Anesthesiologists Physical Status Classification System

SVES: supraventricular extrasystole, VES_mono: single ventricular extrasystole, Atrial Fib/Flutt: atrial fibrillation or flutter, AV-Block: atrioventricular block, VES_poly: polymorphic ventricular extrasystoles, VF: ventricular fibrillation, VT: ventricular tachycardia, PEA:pulseless electrical activity