|Data variable no.||Data variable name||Type of data||Data variable categories or values||Definition of data variable|
|32||Time from alarm to arrival at scene||Continuous||HH:MM||The time from when the emergency call is answered (at the emergency call centre) until the first medical provider (at least the equivalent of EMT's) arrives at the patient.|
|33||Time until normal arterial base excess||Continuous||HH:MM||
The time from first measured arterial base excess at hospital admission until first measured arterial base excess within normal range.|
Reference range for base excess: ± 3 mmol/l.
|34||Time to first CT scan||Continuous||HH:MM||The time from hospital admission until the time marked on the first CT scan image.|
|35||Time until first key emergency interventions||Continuous||HH:MM||
The time from hospital admission until the FIRST emergency intervention.|
Record the time from hospital admission until the time of FIRST knife to skin is performed. Consider only the emergency interventions listed in data variable number 28.