From: Detecting local risk factors for residual malaria in northern Ghana using Bayesian model averaging
Variable | Source/satellite | Details |
---|---|---|
Distance to health facility | GIS-derived | Euclidean distance from active health facility at time of survey (based on survey location) |
Distance to main roads | GIS-derived [81] | Euclidean distance from major roads |
Distance to urban centers | GIS-derived | Euclidean distance from center with population ≥ 5000 individuals |
Distance to water bodies | GIS-derived [82] | Euclidean distance from rivers and standing water bodies |
Elevation | CGIAR SRTM [83] | Meters above sea level |
Land surface temperature—daya | NASA (Terra) MOD13A3 (Aqua) MYD13A3 [84] | Average monthly daytime temperature (in degrees Celsius) 30 days prior to a survey |
Land surface temperature—night | NASA (Terra) MOD13A3 and (Aqua) MYD13A3 [84] | Average monthly nighttime temperature (in degrees Celsius) 30 days prior to a survey |
Normalized difference vegetative indexa | NASA (Terra) MOD13A3 and (Aqua) MYD13A3 [85] | The maximum monthly index 30Â days prior to a survey |
Population density | WorldPop [86] | Population density per 100Â m grid, log-transformed |
Population density (≤ 5 y.o.)a | WorldPop [86] | Population under 5 years of age density per 100 m grid, log-transformed |
Rainfall (historical)a | WorldClim [87] | Average of the cumulative sum of precipitation from 3 to 1Â month prior to the survey date from past 50Â years |
Rainfall (current)a | FEWSNET [88] | Average of the cumulative sum of precipitation from 3 to 1Â month prior to survey |
Slope | GIS-derived (from elevation) | Â |