Table 2.
Summary of household variables
| household variables | N | % | ||
|---|---|---|---|---|
| Shared model characteristics | ||||
| Number of infections per household | ||||
| 0 | 244 | 86.22 | ||
| 1 | 33 | 11.66 | ||
| 2 + | 6 | 2.12 | ||
| Number of people tested per household | ||||
| 1 | 83 | 29.33 | ||
| 2 | 146 | 51.59 | ||
| 3 | 42 | 14.84 | ||
| 4 + | 12 | 4.24 | ||
| Snail models | Mean | SD | Min. | Max. |
| Ditches | ||||
| Distance from home to nearest present ditch (km) | 0.57 | 0.89 | < 0.01 | 3.26 |
| Length of present ditches within 0.25 km of the home (km) | 0.24 | 0.28 | 0.00 | 0.97 |
| Length of present ditches within 0.5 km of the home (km) | 0.65 | 0.61 | 0.00 | 2.69 |
| Length of present ditches within 1 km of the home (km) | 1.74 | 1.70 | 0.00 | 7.31 |
| Distance from home to nearest absent ditch (km) | 0.26 | 0.23 | < 0.01 | 1.05 |
| Length of absent ditches within 0.25 km of the home (km) | 0.23 | 0.28 | 0.00 | 0.93 |
| Length of absent ditches within 0.5 km of the home (km) | 0.77 | 0.65 | 0.00 | 2.11 |
| Length of absent ditches within 1 km of the home (km) | 2.22 | 1.35 | 0.00 | 6.80 |
| Fields | ||||
| Distance from home to nearest present field (km) | 0.58 | 0.51 | < 0.01 | 1.55 |
| Area of present fields within 0.25 km of the home (km2) | 0.01 | 0.01 | 0.00 | 0.05 |
| Area of present fields within 0.5 km of the home (km2) | 0.02 | 0.04 | 0.00 | 0.13 |
| Area of present fields within 1 km of the home (km2) | 0.04 | 0.06 | 0.00 | 0.16 |
| Distance from home to nearest absent field (km) | 0.36 | 0.54 | < 0.01 | 2.20 |
| Area of absent fields within 0.25 km of the home (km2) | 0.01 | 0.01 | 0.00 | 0.19 |
| Area of absent fields within 0.5 km of the home (km2) | 0.02 | 0.02 | 0.00 | 0.09 |
| Area of absent fields within 1 km of the home (km2) | 0.06 | 0.06 | 0.00 | 0.04 |
| Environmental data models | Mean | SD | Min. | Max. |
| Built and natural environment | ||||
| Distance from home to the nearest waterway (km) | 3.02 | 1.82 | 0.06 | 5.44 |
| Distance from home to the nearest waterbody (km) | 2.11 | 0.95 | 0.37 | 3.91 |
| Distance from home to the nearest road (km) | 0.36 | 0.26 | < 0.01 | 1.27 |
| Elevation of the home (m) | 573.45 | 54.81 | 495.0 | 685.0 |
| Remotely sensed data | ||||
| Mean NDWI within 0.25 km of the home | − 0.19 | 0.02 | − 0.23 | − 0.15 |
| Mean NDWI within 0.5 km of the home | − 0.19 | 0.02 | − 0.21 | − 0.16 |
| Mean NDWI within 1 km of the home | − 0.19 | 0.01 | − 0.20 | − 0.17 |
| Mean NDVI within 0.25 km of the home | 0.18 | 0.02 | 0.14 | 0.23 |
| Mean NDVI within 0.5 km of the home | 0.18 | 0.02 | 0.14 | 0.22 |
| Mean NDVI within 1 km of the home | 0.18 | 0.02 | 0.15 | 0.21 |
| Mean EVI within 0.25 km of the home | 0.40 | 0.03 | 0.36 | 0.48 |
| Mean EVI within 0.5 km of the home | 0.40 | 0.02 | 0.37 | 0.47 |
| Mean EVI within 1 km of the home | 0.40 | 0.02 | 0.38 | 0.46 |
NDWI Normalized difference Water Index, NDVI Normalized difference Vegetation Index, EVI Enhanced Vegetation Index