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Table 5 Univariate and multivariate association between larvae densities with physiochemical parameters and breeding site-type

From: Effect of physicochemical parameters on Anopheles and Culex mosquito larvae abundance in different breeding sites in a rural setting of Muheza, Tanzania

Parameter

Univariate

Multivariate

Coefficient (95% CI)

P-value

Coefficient (95% CI)

P-value

Anopheles larvae

 Breeding site type category

  (i) Rain water collections

1

 

1

 

  (ii) Road side water collections and road potholes

0.08 (-2.22 – -2.37)

0.947

-0.35 (-1.84–1.15)

0.650

  (iii) Rice fields and animal hoof prints

-0.17 (-2.11–1.76)

0.860

-2.1 (-5.05–0.85)

0.162

  (iv) Swampy areas

-0.19 (-1.65–1.26)

0.795

-0.36 (-1.86–1.13)

0.633

  (v) Pond water reservoirs

-1.36 (-2.93–0.21)

0.089

-2.02 (–3.42 – -0.62)

0.005a

  (vi) Small ponds and water collections on the sides of the bridges

-1.31 (-4.07–1.45)

0.351

0.001 (-3.00–3.00)

0.999

  Salinity (ppm)

1.86 (0.59–3.12)

0.004a

2.55 (1.44–3.66)

< 0.001a

  Temperature (°C)

0.06 (-1.40–1.52)

0.94

  

  Total dissolved solids (ppm)

1.35 (-0.01–2.70)

0.051

  

  Conductivity (μS)

1.62 (0.24–3.00)

0.022a

  

  pH

-0.45 (-1.26–0.35)

0.271

  

Culex larvae

 Breeding site type category

  (i) Rain water collections

1

 

1

 

  (ii) Road side water collections and road potholes

0.66 (-2.14–3.45)

0.644

-0.232 (-2.52–2.06)

0.843

  (iii) Rice fields and hoof prints

-2.59 (-4.33 – -0.85)

0.004a

-1.15 (-3.84–1.54)

0.402

  (iv) Swampy areas

-0.72 (-2.59–1.16)

0.453

-1.39 (-3.38–0.59)

0.169

  (v) Pond water reservoirs

-2.72 (-4.39–1.06)

0.001a

-1.57 (-4.34–1.19)

0.264

  (vi) Small ponds and water collections on the sides of the bridges

-1.36 (-4.42–1.69)

0.382

-2.48 (-5.07–0.12)

0.062

  Salinity (ppm)

0.57 (-0.22–2.37)

0.532

  

  Temperature (°C)

-1.75 (-3.36–0.12)

0.035a

-1.81 (-3.62–0.01)

0.051

  Total dissolved solids (ppm)

-0.06 (-1.90–1.77)

0.95

  

  Conductivity (μS)

-0.01 (-1.93–1.91)

0.992

  

  pH

-0.74 (-1.42–0.06)

0.034a

-0.42 (-1.54–0.7)

0.459

  1. aStatistically significant