Table 3 Variables associated with farms in England and Wales being confirmed positive for scrapie
Variable | Value | OR | 95% CL | P-value |
|---|---|---|---|---|
Flock-size | 1 - 19 | 0.29 | 0.21 - 0.40 | < 0.0001 |
20 - 89 | 0.13 | 0.09 - 0.19 | ||
90 - 335 | 0.35 | 0.26 - 0.47 | ||
> 335 | reference | |||
Soil drainage | Freely draining | reference | 0.045 | |
Impeded drainage | 0.89 | 0.64 - 1.24 | ||
Naturally wet | 1.80 | 1.02 - 3.17 | ||
Soil texture | Sand | reference | 0.119 | |
Loam | 0.57 | 0.28 - 1.14 | ||
Peat | 0.92 | 0.41 - 2.10 | ||
Clay | 1.08 | 0.30 - 3.86 | ||
Soil fertility | High | reference | 0.173 | |
Moderate | 1.38 | 0.59 - 3.22 | ||
Low | 1.14 | 0.53 - 2.47 | ||
Very low | 0.52 | 0.16 - 1.71 | ||
Lime-rich | 0.68 | 0.26 - 1.82 |