Skip to main content

Advertisement

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