Table 2. Potential environmental predictors included in models of Kyasanur Forest Disease distribution†.
| Category of predictor | Predictor name(abbreviation) | Description / units | Mean and s.d. across the region (1 km) | Range across the region (1 km) |
|---|---|---|---|---|
| TOPOGRAPHY | Elevation (elev) | mean elevation (m. a. s. l.) | 559 ± 190 | 2–1224 |
| Slope (slope) | mean slope (degree) | 4.5 ± 3.7 | 0–32.1 | |
| LANDSCAPE CHANGE | Area of forest loss | proportional area of cell classified as forest lost during 2000–2014 | 1.1 ± 2.6 | 0–43 |
| LANDSCAPE | Forest type diversity | diversity of forest types(Shannon-Weaver Index accounting for % area per cell per forest type) | 0.77 ± 0.32 | 0–1.37 |
| Area of dry deciduous | proportional area of dry deciduous forest per cell | 13 ± 16 | 0–100 | |
| Area of wet deciduous | proportional area of moist deciduous forest per cell | 20 ± 22 | 0–100 | |
| Area of wet evergreen | proportional area of wet evergreen forest per cell | 17 ± 24 | 0–100 | |
| Area of plantation | proportional area of plantation per cell | 15 ± 13 | 0–90 | |
| Area of water bodies | proportional area of waterbody per cell | 4 ± 14 | 0–100 | |
| Area of agricultural or fallow land | proportional area agricultural or fallow land | 25 ± 24 | 0–96 | |
| HOSTS | Buffalo density | buffalo density in mean head per km per cell | 17.5 ± 17.0 | 0.0–245.8 |
| Cattle density | indigenous cattle density in mean head per km per cell | 60.0 ± 40.5 | 0.1–904.0 | |
| Human population density | human population size in mean head per km per cell | 204.7 ± 528.8 | 0–7087.8 | |
| PUBLIC HEALTH | Proximity to primary health centre (PHC_proximity) | proximity to primary health centrewhere 1 = Primary Health Centre (PHC) within village, 2 = PHC > 5 km, 3 = PHC 5–10 km, 4 = PHC > 10 km from village | 3* | 1–4 |
| No. of medics per head of population (Nmedics) | no. of medics per head of population | 0.0006 ± 0.0018 | 0–0.04 |
†See S3 File for the sources and processing methods for these environmental predictors.
*modal value.