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Multivariable logistic regression model for risk factors associated with Q fever abortion in ruminants.
| Variables | Level | Odds ratio | P-value | 95% CI |
|---|---|---|---|---|
| Ticks on aborted animals | Absent | 1.00 | - | - |
| Present | 4.54 | 0.05 | 0.96-21.32 | |
| Frequency of litter cleaning | <5 times/year | 1.00 | - | - |
| 5 < × < 10 times/year | 0.30 | 0.05 | 0.04-1.00 | |
| >10 times/year | 0.09 | 0.05 | 0.008-1.023 | |
| Carnivores on Farm | Absent | 1.00 | - | - |
| Present | 3.33 | 0.01 | 0.762-1.02 |
