Table 1

Summary statistics for the number of Buruli ulcer cases and potential covariates used in analyses.

Variable
Mean
Minimum
Maximum

Dependent variable
Buruli ulcer cases
1.8
0.0
29
Covariates
Agriculture (0.1)
0.33
0.0
1.0
Agriculture (0.5)
0.33
0.0
1.0
Agriculture (1)
0.33
0.0
1.0
Agriculture (5)
0.33
0.0
0.88
Agriculture (10)
0.33
0.0
0.77
Agriculture (20)
0.31
0.0
0.61
Agriculture (50)
0.25
0.0
0.42
Urban (0.1)
0.05
0.0
1.0
Urban (0.5)
0.03
0.0
0.62
Urban (1)
0.02
0.0
0.48
Urban (5)
0.01
0.0
0.21
Urban (10)
0.01
0.0
0.13
Urban (20)
0.01
0.0
0.06
Urban (50)
0.01
0.0
0.06
Water (0.1)
0.0
0.0
1.0
Water (0.5)
0.01
0.0
0.88
Water (1)
0.01
0.0
0.72
Water (5)
0.01
0.0
0.42
Water (10)
0.01
0.0
0.34
Water (20)
0.01
0.0
0.23
Water (50)
0.01
0.0
0.07
Wetland (0.1)
0.0
0.0
0.17
Wetland (0.5)
0.01
0.0
0.19
Wetland (1)
0.01
0.0
0.20
Wetland (5)
0.0
0.0
0.18
Wetland (10)
0.02
0.0
0.23
Wetland (20)
0.02
0.0
0.17
Wetland (50)
0.03
0.0
0.11
Forest (0.1)
0.02
0.0
1.0
Forest (0.5)
0.03
0.0
0.71
Forest (1)
0.03
0.0
0.50
Forest (5)
0.04
0.0
0.57
Forest (10)
0.05
0.0
0.70
Forest (20)
0.06
0.0
0.76
Forest (50)
0.07
0.0
0.52
Distance to river (m)
22.4
3,850
12,157
Wetness index
6.8
7.9
9.2
Mean elevation (m)
120.9
51.8
345.4

Land use/cover was estimated for different buffer widths around individual villages, while mean wetness index and elevation are based on the village drainage basin (see Methods). Land use/cover variable is followed by buffer radius (km) in parentheses.

Wagner et al. International Journal of Health Geographics 2008 7:25   doi:10.1186/1476-072X-7-25