Table 1 Characteristics of interview, observation and focus group study subjects

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