Table 1.

Characteristics of interview, observation and focus group study subjects

Phase	Number of participants	Age	Gender	Education	Years in ambulance service
Phase 2 Semi- structured interviews	n = 3		Male n = 2	Doctor n = 1
			Female n = 1	Nurse n = 2
Phase 3 Observation rural station	n = 11	Mean = 42	Male n = 7	Emergency Medical Technicians n = 1	Mean = 14
		Range = 32-58	Female n = 4	Ambulance nurse n = 10	Range = 1-34
Phase 3 Observation urban station	n = 16	Mean = 42	Male n = 13	Emergency Medical Technicians n = 1	Mean = 12
		Range = 32-58	Female n = 3	Ambulance nurse n = 15	Range = 2-32
Phase 4 Focus group rural station	n = 8	Mean = 42	Male n = 6	Emergency Medical Technicians n =0	Mean = 12
		Range = 33-50	Female n = 2	Ambulance nurse n = 8	Range = 5-28
Phase 4 Focus group urban station	n = 5	Mean = 44	Male n = 3	Emergency Medical Technicians n = 0	Mean = 14
		Range = 36-54	Female n = 2	Ambulance nurse n = 5	Range = 10-25