Variable | OR | 95% CI | p value |
---|---|---|---|
Land use | |||
 Agricultural | 1.446 | 0.751 - 2.784 | 0.270 |
 Woodland and semi-natural | 1.034 | 0.542 - 1.973 | 0.920 |
 Urban | - | - | - |
Herd size | |||
 ≤5 | 2.951 | 1.411 - 6.171 | 0.004 |
 6-30 | 4.512 | 2.218 - 9.180 | <0.001 |
 ≥31 | - | - | - |
Cattle density | |||
 ≤10 | 1.478 | 0.745 - 2.935 | 0.264 |
 11-20 | 1.711 | 0.883 - 3.314 | 0.111 |
 ≥21 | - | - | - |
Adult/calf ratios | |||
 ≤1.0 | 0.578 | 0.291 - 1.150 | 0.118 |
 1.1-2.0 | 1.550 | 0.841 - 2.857 | 0.160 |
 ≥2.1 | - | - | - |
Age class | |||
 Juvenile | 0.249 | 0.128 - 0.484 | <0.001 |
 Subadult | 0.449 | 0.244 - 0.828 | 0.010 |
 Adult | - | - | - |
Reproductive problems | |||
 Yes | 1.081 | 0.641 - 1.822 | 0.771 |
 No | - | - | - |
Southern vs northern | |||
 Southern | 3.525 | 2.000 - 6.214 | <0.001 |
 Northern | - | - | - |
Eastern vs western | |||
 Eastern | 0.332 | 0.171 - 0.647 | 0.001 |
 Western | - | - | - |