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Table 2 Descriptive statistics for habitats without (controls) and with (cases) Anopheles larvae

From: Identifying the most productive breeding sites for malaria mosquitoes in The Gambia

 

Control

Cases

p

χ2/t

PROPORTION*

    

of tidal water bodies

72.0%

74.7%

0.701

0.147

of deep waterbodies (>50 cm)

25.3%

22.9%

0.720

0.129

of habitats with fish

20.0%

14.5%

0.355

0.854

of habitats with Culicinae

20.0%

53.0%

<0.001

18.351

of habitats with Odonata

14.7%

38.6%

0.001

11.349

of habitats with Coleoptera larvae

12.0%

27.7%

0.014

6.021

of habitats with Coleoptera adults

24.0%

39.8%

0.034

4.476

of habitats with Ephemeropera

5.4%

20.5%

0.005

7.845

of habitats with Heteroptera

26.7%

49.4%

0.003

8.589

MEAN (95% CI)**

    

Diversity index

0.27 (0.18–0.35)

0.85 (0.73–0.97)

<0.001

7.898

Water depths (cm)

7.2 (5.5–8.9)

7.0 (5.6–8.5)

0.871

0.163

Vegetation cover of habitats (%)

50.3 (42.4–58.3)

48.6 (41.7–55.5)

0.745

0.326

Water temperature (°C)

30.4 (29.6–31.3)

29.4 (28.5–30.3)

0.111

1.044

pH

6.4 (6.2–6.6)

6.5 (6.3–6.7)

0.373

-0.894

Conductivity (μS/cm)

7009 (4700–9319)

3621 (2331–4911)

0.010

2.609

Turbidity (ntu)

136.9 (86.6–187.3)

191.4(128.4–254.4)

0.188

-1.323

Oxygen saturation (%)

72.4 (63.1–81.8)

83.2 (72.5–93.8)

0.133

-1.509

  1. *Proportions are compared using χ2-test
  2. **Means are compared using t-test