Table 3.

Multivariate analysis of factors associated with Anopheles abundance using Poisson regression

Variable	2008		2010
	IRR (95% CI)	P-value	IRR (95% CI)	P-value
ITNs (Yes)	0.78 (0.39 to 1.53)	0.47	0.97 (0.82 to 1.15)	0.73
ITNs (No)	Reference		Reference
Windows (Yes)	0.78 (0.39 to 1.53)	0.099	1.1 (0.64 to 1.79)	0.80
Windows (No)	Reference		Reference
Eaves (Yes)	3.5 (1.5 to 8.1)	0.004	2.08 (1.43 to 3.04)	< 0.001
Eaves (no)	Reference		Reference
Altitude	0.997 (0.996 to 0.998)	< 0.001	1.002 (1.001 to 1.002)	< 0.001

IRR = incidence rate ratio; CI = confidence interval; ITN = insecticide-treated net