Table 2. Descriptive statistics of the study variables by district (n = 112).
| Variables | Mean | Median | Standard Deviation | Minimum | Maximum |
|---|---|---|---|---|---|
| Population -no. | 309,238 | 239,704 | 252,204 | 54,293 | 1,997,418 |
| Total cases in 2011–2016—no. | 98 | 0 | 310 | 0 | 2320 |
| Population density–per km2 | 276.86 | 179.07 | 730.16 | 7.01 | 7735.66 |
| Urban population—% | 15.30 | 12.74 | 12.91 | 1.87 | 100.00 |
| Improved sanitation coverage—% | 75.22 | 80.00 | 17.87 | 2.30 | 98.90 |
| Improved handwashing coverage—% | 33.06 | 33.05 | 15.21 | 0.00 | 86.00 |
| Sanitation and hygiene benchmark * | 51.92 | 52.00 | 13.91 | 15.00 | 90.00 |
| Improved water sources—% | 81.55 | 88.00 | 19.78 | 0.00 | 100.00 |
| Distance from center of the district to nearest hospital—km | 33.00 | 32.41 | 11.95 | 7.28 | 64.63 |
| Distance from the center of the district to nearest lake or river—km | 47.00 | 37.01 | 41.84 | 0 | 209.18 |
| Distance from the center of the district to nearest border of DRC or Kenya—km | 90.92 | 81.27 | 60.89 | 6.74 | 231.93 |
| Weighted incidence rate of the 1st order neighbor districts—per 100,000* | 28.44 | 6.15 | 48.92 | 0 | 291.16 |
| Average annual rainfall during 2011–2015 (mm) | 1324.48 | 1440.70 | 194.34 | 939.06 | 1485.96 |
* Calculation of the benchmark score and weighted incidence rate of the 1st order neighbor districts have been escribed in the text