Micro-epidemiology of malaria in an elimination setting in Central Vietnam

Malaria Journal

Table 4 Multivariable risk factor analysis for recent Plasmodium falciparum exposure, in whole population and separately for farm and non-farm sleepers

Variable	Whole population			Farm sleepers only			Non-farm sleepers only
Variable	OR	(95% CI)	p	OR	(95% CI)	p	OR	(95% CI)	p
Age	1.07	(1.03–1.12)	0.001	1.08	(1.02–1.16)	0.013	1.09	(1.03–1.15)	0.002
Sex			0.003			0.003			0.21
Male	1			1			1
Female	7.89	(2.01–30.9)		14.23	(2.40–84.27)		2.86	(0.52–14.95)
Frequency of evening drinking in hamlet			0.18						0.006
Daily	2.15	(0.71–6.51)					9.51	(1.93–46.87)
Less than daily	1						1
Number of children in household	0.89	(0.61–1.3)	0.55
Household bed net ratio			0.32
1–2 people per net	1
> 2 people per net	0.5	(0.13–1.95)
Other P. falciparum seropositive household member			0.19
No	1
Yes	2.23	(0.67–7.49)
Hamlet house structure									0.01
On ground							1
On stilts							0.12	(0.03–0.60)
Duration of stay at farm			0.2			0.07
Does not stay	1
Stays up to 1 week	0.93	(0.34–2.55)		1
Stays more than 1 week	3.88	(0.78–19.32)		6.99	(0.84–58.42)
Goes to forest in the evening			0.14
No	1
Yes	2.4	(0.75–7.63)
Goes logging in the evening			0.006			< 0.001
No	1			1
Yes	10.85	(2.01–58.51)		96.26	(8.58–1079.44)
Goes fishing in the evening			0.17			0.028
No	1			1
Yes	3.11	(0.63–15.43)		7.99	(1.25–50.85)

ISSN: 1475-2875