Table 8. Multivariate regression model of the impact of different factors on clinical malaria.

The model included an interaction between net use and district (a proxy for IRS). Comparisons that were statistically significant a p<0.05 are indicated in bold.

	Baseline		Post IRS 1		Post IRS 2
Parameter	OR	p	OR	p	OR	p
Rachuonyo (IRS)	1.25 (0.51, 3.07)	0.626	2.27 (0.79, 6.52)	0.128	0.29 (0.14, 0.61)	0.001
Nyando (non-IRS)	1.00	Ref.	1.00	Ref.	1.00	Ref.
Use a net (Yes)	0.45 (0.19, 1.05)	0.065	1.75 (0.77, 3.96)	0.182	0.50 (0.29, 0.86)	0.011
Use a net (No)	1.00	Ref.	1.00	Ref.	1.00	Ref.
Rachuonyo * Use a net (Yes)	0.49 (0.13, 1.84)	0.293	0.03 (0.00, 0.26)	0.002	2.15 (0.73, 6.35)	0.166
Rachuonyo * Use a net (No)	1.00	Ref.	1.00	Ref.	1.00	Ref.
Nyando * Use a net (Yes)	1.00	Ref.	1.00	Ref.	1.00	Ref.
Nyando * Use a net (No)	1.00	Ref.	1.00	Ref.	1.00	Ref.
Elevation ≥1500	NA	NA	0.66 (0.23, 1.88)	0.433	NA	NA
Elevation <1500	NA	NA	1.00	Ref.	NA	NA
Gender (Female)	0.86 (0.47, 1.57)	0.628	0.94 (0.49, 1.81)	0.854	2.01 (1.37, 2.94)	<0.001
Gender (Male)	1.00	Ref.	1.00	Ref.	1.00	Ref.
Age, <5 years	4.60 (1.94, 10.9)	0.001	4.75 (1.85, 12.2)	0.001	4.19 (2.59, 6.78)	<0.001
Age, 5 to 14 years	2.63 (1.21, 5.72)	0.014	2.35 (1.15, 4.81)	0.020	5.97 (3.55, 10.0)	<0.001
Age, ≥15 years	1.00	Ref.	1.00	Ref.	1.00	Ref.
History of ACT use (Yes)	4.15 (1.45, 11.9)	0.008	4.06 (1.71, 9.65)	0.002	1.20 (0.45, 3.21)	0.713
History of ACT use (No)	1.00	Ref.	1.00	Ref.	1.00	Ref.
Use coils or sprays (Yes)	0.53 (0.17, 1.62)	0.265	0.94 (0.22, 4.00)	0.932	1.09 (0.53, 2.25)	0.807
Use coils or sprays (No)	1.00	Ref.	1.00	Ref.	1.00	Ref.
House type, Permanent	0.47 (0.15, 1.49)	0.197	0.24 (0.05, 1.16)	0.076	0.33 (0.16, 0.69)	0.003
House type, Semi-permanent	0.96 (0.51, 1.80)	0.907	0.50 (0.24, 1.06)	0.071	0.50 (0.30, 0.85)	0.010
House type, Traditional	1.00	Ref.	1.00	Ref.	1.00	Ref.