Risk factors | Tested | Test (+) (%) | 95% CI | χ2 | p-value |
---|---|---|---|---|---|
Animal composition | |||||
Only cattle | 422 | 93 (22) | 0.18–0.26 | 3.99 | 0.040 |
Cattle and small ruminants | 152 | 46 (30.7) | 0.23–0.38 | ||
Management | |||||
Intensive | 254 | 55 (21.7) | 0.17–0.27 | ||
Semi-intensive | 320 | 84 (26.3) | 0.21–0.31 | 1.64 | 0.200 |