Skip to main content

Table 3 Univariate model to estimate OR (CI 95%) for the association of environmental factors in larval habitats with the occurrence of Anopheles species

From: Larval habitats, species composition and distribution of malaria vectors in regions with autochthonous and imported malaria in Roraima state, Brazil

Variables

 

Anopheles species

An. albitarsis s.l.

An. darlingi

An. nuneztovari s.l.

An. triannulatus s.l.

Habitat type

Dam

Ref

Ref

Ref

Ref

 

Fishpond

0.91 (0.12;4.46)

0 (0;136.02)

-

40.7 (8.21;322.05)**

 

Lake

1.15 (0.34;3.88)

2.21 (0.85;5.89)

0.7 (0.26;1.8)

–

 

Pond

–

–

–

–

 

Stream

0.58 (0.2;1.75)

6.85 (3.08;16.08)**

0.16 (0.06;0.38)**

0.46 (0.12;1.73)

Area (Sq m)

 > 300 m

Ref

Ref

Ref

Ref

 

150-300 m

3.83 (1.16;17.35)*

2.27 (1.12;4.67)*

0.48 (0.2;1.15)

0.13 (0.03;0.42)**

 

 < 150 m

3.82 (1.03;18.32)

1.07 (0.48;2.36)

1.11 (0.46;2.67)

0.29 (0.08;0.89)*

Water turbidity

Transparent

Ref

Ref

Ref

Ref

 

Turbid

0.24 (0.1;0.59)**

1.51 (0.75;3.08)

0.73 (0.33;1.68)

-

Water current

Moderate

Ref

Ref

Ref

Ref

 

Stagnant

6.9 (1.3;127.59)

0.08 (0.02;0.23)**

-

2.35 (0.71;10.67)

 

Slow

6.51 (1.14;122.92)

0.12 (0.03;0.35)**

-

0.6 (0.11;3.43)

Distance houses

 > 15 m

Ref

Ref

Ref

Ref

 

15-8 m

0.2 (0.03;0.74)*

4.19 (2.06;8.85)**

0.46 (0.19;1.04)

0.48 (0.15;1.33)

 

 < 8 m

1.74 (0.63;4.59)

2.51 (1.11;5.86)*

0.34 (0.09;0.96)

0.15 (0.01;0.82)

Sunlight exposure

Partly shaded

Ref

Ref

Ref

Ref

 

Shaded

2.04 (0.68;5.9)

2.42 (1.1;5.71)*

-

1.86 (0.35;8.8)

 

Full sun

2.93 (1.01;8.41)*

0.1 (0.03;0.28)**

0.78 (0.32;1.83)

15.67 (5.06;59.78)**

Debris

Nothing

Ref

Ref

Ref

Ref

 

Trunk/Roots/Leaves

0.44 (0.17;1.18)

12.58 (4.66;44.06)**

0.8 (0.35;1.96)

0.08 (0.03;0.21)**

  1. Statistically significant (*p < 0.05; and **p < 0.01; – small sample size