Table 8.

Factors related to the presence/absence of larvae and larval densities, adjusted by study area.

Presence/absence of anopheline larvae (n = 293), GEE logistic regression model
Habitat characteristics	Odds Ratio	95% CI	p-value
			<0.001
Study areas
Parcelles Grand Medine	1
Pikine	1.96	0.08 – 49.21	0.682
Yarakh	2.10	0.05 – 93.07	0.702
Hann Maristes	9.19	0.35 – 238.37	0.182
Ouest Foire	13.88	0.51 – 378.05	0.119
Almadies	35.56	1.47 – 862.54	0.028
Université	46.69	1.50 – 1449.39	0.028
Habitat type
Man-made water collections	1
Waterproof containers	1.51	0.09 – 24.72	0.771
Canals	1.53	0.06 – 41.92	0.801
"Céanes", cemented weels or basins	3.65	0.23 – 58.63	0.360
Swamp areas, marshes, ponds or lakes	10.14	1.14 – 90.28	0.038
Ditches or puddles	33.47	4.05 – 276.48	0.001
Presence of Culicinae larvae			<0.001
No	1
Yes	8.24	3.26 – 20.86
Larval density (n = 86), GEE binomial regression model
Habitat characteristics	Risk Ratio	95% CI	p-value
			<0.001
Study areas
Hann Maristes	ref.
Université	1.15	0.29 – 4.54	0.838
Pikine	2.00	0.86 – 4.66	0.107
Ouest Foire	5.03	2.09 – 12.53	0.001
Almadies	5.48	2.37 – 12.68	<0.001
Yarakh	10.98	1.46 – 82.75	0.020
Habitat type
Waterproof containers	ref.
Canals	3.78	0.61 – 23.53	0.155
"Céanes", cemented weels or basins	9.53	1.08 – 83.91	0.042
Ditches or puddles	10.82	2.83 – 41.41	0.001
Swamp areas, marshes, ponds or lakes	23.29	5.16 – 105.04	<0.001
Man-made water collections	48.16	4.55 – 509.71	0.001
Water temperature			<0.001
<30°C	ref.
>= 30°C	3.13	1.67 – 5.84
Surface vegetation (%)			0.007
<20%	ref.
>= 20%	0.36	0.17 – 0.75
Presence of Culicinae larvae			0.019
No	ref.
Yes	2.29	1.14 – 4.60

Multivariate analysis with GEE logistic regression model or negative binomial regression model.