Table 3.

Multivariate model of associations between measured variables and malaria risk in Kipsamoite and Kapsisiywa, western Kenyan highlands, March–September 2004

Potential risk factors	Adjusted* odds ratio (95% CI)	P
Female Household Head Education
None	2.02 (1.08, 3.75)	0.03
Primary/some secondary	2.01 (1.16, 3.05)	0.01
Cmpleted Secondary +	1
Mosquito coils	0.48 (0.21, 1.10)	0.08
Overnight travel 7–21   days prior	2.17 (1.15, 4.11)	0.02
Channelled swamp water	1.75 (0.96, 3.20)	0.07
Goats sleeping in compound	1.61 (0.95, 2.74)	0.07
Absence of ceiling	1.53 (1.08, 2.18)	0.02
Separate kitchen	1.77 (1.35, 2.32)	<0.0001
House on flat land	1.61 (1.19, 2.18)	0.002
Elevation (quartiles)
< 1932 m	1.35 (0.60, 3.04)	0.47
1932–1947 m	1.68 (0.76,3.71)	0.20
1947–1983 m	2.02 (1.08, 3.79)	0.03
> 1983 m	1
Distance from forest
< 250 m	3.26 (1.49, 7.12)	0.003
250–500 m	2.23 (1.02, 4.85)	0.04
500–1000 m	1.26 (0.72, 2.20)	0.41
> 1000 m	1
Distance from swamp
< 250 m	2.81 (1.34, 5.89)	0.006
250–500 m	2.31 (1.15, 4.65)	0.02
500–1000 m	1.52 (0.80,2.89)	0.20
> 1000 m	1
Absence of trees   within 200 m	1.59 (1.15, 2.19)	0.005
Presence of maize   within 200 m	2.02 (1.21, 3.37)	0.007

^*Model adjusted for age, site and week of interview.