Table 4. An. gambiae s.l. larval productivity surrogate, and environmental and meteorological factors significantly associated with the An. gambiae s.l. HBR recorded in the 45 studied zones, including all the observations for years 2007, 2008 and 2009 (negative binomial regressions are given - step 3).

	Univariate**			Multivariate
100% of adult catching points (61 zones/years, 854 observations)	Coef.	95% CI*	p-value	Coef.	95% CI*	p-value
Anopheles larval productivity surrogate ***
Per unit increase	24.04	17.22; 30.86	<0.001	24.94	18.26; 31.62	<0.001
Built-up and asphalt mean surface ****
Per m2 increase	−1.44	−1.92; −0.97	<0.001	−1.06	−1.46; −0.68	<0.001
Rainfall amount in the preceding 7 days
Per 10 mm increase	0.15	0.09; 0.22	<0.001	0.16	0.10; 0.22	<0.001

^*95% confidence interval.

^**Only the variables significantly associated in the multivariate model.

^***Sum of (probabilities of presence of Anopheles larvae x surfaces of larval habitats in km²) for all water bodies contained in the 200-m buffer and 300-m to 1,000-m rings around the catching points, weighted by the distance to the catching point.

^****Weighted with distance to catching point (from 200-m buffer to 300–1,000-m rings).