Skip to main content

Table 3 Environmental factors evaluated from 1996 (Step 1) and 2007 (Step 2) SPOT satellite images and associated with the 1994-97 anopheline aggressiveness.

From: Spatial heterogeneity and temporal evolution of malaria transmission risk in Dakar, Senegal, according to remotely sensed environmental data

  1996 SPOT-4 image
(20 m)
(Step 1)
2007 SPOT-5 image
(2.5 m degraded to 20 m)
(Step 2)
  Coefficient 95% IC p-value Adjusted R2 Coefficient 95% IC p-value Adjusted R2
Distance to vegetation (per 100 m and square root transformed) -0.33 -0.51; -0.15 0.0010 0.38 -0.41 -0.60; -0.21 0.0003 0.45
Built-up area in 300-m radius buffer (per Ha) -0.04 -0.06; -0.02 0.0005 0.42 -0.06 -0.07; -0.04 < 0.0001 0.57
  1. Univariate linear regression. Twenty-three observations. Independent variables are not rounded. Anopheline aggressiveness is quare root transformed.