Table 2.
Univariable and multivariable binomial generalised linear models at the farm level (n = 25) for C. burnetii in dairy cattle herds of Jimma town.
| Variable | Univariable Analysis | Best-Fitting Multivariable Analysis | ||||
|---|---|---|---|---|---|---|
| Coef. | 95% CI | p-Value | Coef. | 95% CI | p-Value | |
| Farm-Level Factors | ||||||
| Multi-age mix (ref. yes) | 0.28 | (−0.81, 1.37) | 0.62 | |||
| Multi-species mix (ref. yes) | 16.04 | (−4449.44, 4481.51) | 0.99 | |||
| Tick infestation (ref. yes) | 0.18 | (−0.9, 1.26) | 0.75 | |||
| Herd size (continuous) * | 0.01 | (0, 0.03) | 0.17 | 0.01 | (−0.14, 0.34) | 0.42 |
| Connected with other herd (ref. yes) | 0.53 | (−1.04, 2.1) | 0.51 | |||
| Management system: semi-intensive (ref. intensive) |
0.58 | (−0.51, 1.67) | 0.30 | |||
| Nuisance (ref. yes) | 0.45 | (−0.86, 1.76) | 0.50 | |||
| Abortion history in the herd (ref. yes) | −0.48 | (−2.04, 1.09) | 0.55 | |||
| Ecological Factors | ||||||
| Elevation * | 0.02 | (−0.01, 0.06) | 0.21 | 0.001 | (−0.001, 0.004) | 0.32 |
| Population density * | −0.01 | (−0.02, 0) | 0.20 | −0.01 | (−0.07, 0.06) | 0.89 |
| Road density | 0.0002 | (0, 0) | 0.73 | −0.01 | (−0.03, 0.01) | 0.16 |
| Landcover: grassland (ref. tree cover) |
−0.74 | (−2.89, 1.4) | 0.50 | 4.76 | (−11.01, 20.52) | 0.55 |
| Landcover: cropland (ref. tree cover) |
−0.78 | (−2.39, 0.83) | 0.34 | 4.64 | (−11.79, 21.06) | 0.58 |
| Landcover: built areas (ref. tree cover) |
−0.26 | (−1.53, 1.02) | 0.70 | 3.56 | (−12.28, 19.4) | 0.66 |
* Variables with p-value < 0.25; Coef: regression coefficient; CI: confidence interval; ref: reference.