Table 3.
Univariable logistic regression analyses of abortion related factors with dependent Brucella seropositivity in cows in Western Tigray, North West Ethiopia, October 2007 to February 2008.
| Status of abortion | Category level | n | Prevalence (%) | P-value | OR | 95% CI of OR | |
|---|---|---|---|---|---|---|---|
| Lower | Upper | ||||||
| Abortion | Absent | 718 | 6.7 | — | — | — | |
| Present | 58 | 20.7 | 0.001 | 3.641 | 1.809 | 7.330 | |
| Abortion frequency | Only once | 48 | 22.9 | — | — | — | |
| More than one | 10 | 10 | 0.359 | 0.374 | 0.043 | 3.283 | |
| Abortion period | Below five months | 29 | 6.9 | — | — | — | |
| Above five months | 29 | 34.5 | 0.010 | 7.105 | 1.395 | 14.180 | |
| Abortion stage | First parity | 30 | 20 | — | — | — | |
| More than one parity | 28 | 21.4 | 0.893 | 1.091 | 0.306 | 3.888 | |