Table 1.
Geospatial variables.
| Unit | Variable type (as used in regression analysis) | Median (minimum–maximum) | VIF | |
|---|---|---|---|---|
| Primary road length | km | Continuous | 306.6 (23.3–650.8) |
4.06 |
| Road density | km−1 | Continuous | 0.63 (0.32–17.3) |
>5 |
| Human population density | Persons/km2 | Continuous | 12.7 (5.7–1428.7) |
Excluded as highly correlated |
| Density of smallholder farms | Holdings/km2 | Continuous | 0.5 (0–5.3) |
1.41 |
| Domestic pig density | Head/km2 | Continuous | 0.90 (0.18–7.89) |
1.18 |
| Average number of pigs per a smallholder farm | Head | Continuous | 1.2 (0–616) |
>5 |
| Total volume of live pigs' movements from ASF-affected regions of Russia | Head or yes/no | Continuous or categorical (yes/no) |
75 (0–1319) |
3.05 |
| Total volume of pig products movements from ASF-affected regions of Russia | kg | Continuous | 120 422 (0–7 126 257) |
1.35 |
| ASF-affected region bordering with ASF-affected region of Russia | Yes/no | Categorical (yes/no) | 0–1 | 1.54 |
| Proportion of rural population in the total population of the district | % | Continuous | 0.8 (0–1) |
>5 |
| Forest/total area proportion | % | Continuous | 9.8 (0 – 29.7) |
>5 |
| Number of ASF cases in wild boar | Number or yes/no | Continuous or categorical (yes/no) | 1 (0–7) |
>5 |