Performance of self-diagnosis and standby treatment of malaria in international oilfield service employees in the field

Table 1 Demographic characteristics of study population.

Demographic characteristics		N (N total 2350)	%
Gender	Male	2065	88
	Female	285	12
Age (yrs)	mean (range)	36 (19–63)	-
Continent of birth	African	733	31
	European	631	27
	South American	328	14
	Asian	301	13
	North American	174	8
	Arabic	102	4
	Oceanian	64	3
Country of birth	Malaria endemic^$	1392	60
	Malaria non endemic	941	40
Working conditions	Outdoor*	1278	54
	Indoor	1072	46
Work status	Long term (>6 months)	1122	48
	Rotator	795	34
	Visitor	342	15
	Other (e.g. spouse)	91	4

Percentages may not add up to exactly one hundred due to rounding off. ^$ Malaria endemic country according to the WHO (5). *Outdoor working conditions include working on a land rig or with seismic crew, off shore, on another field location or on a marine vessel.

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