Table 2 Farm-level factors associated with number of animals seropositive to Toxoplasma gondii in 33 dairy sheep flocks: results of a negative binomial regression model
From: Seroprevalence and risk factors for Toxoplasma gondii in sheep in Grosseto district, Tuscany, Italy
Variable | Level | Count ratio | 95%CI(CR) | P-value |
|---|---|---|---|---|
Size of flock | <300 | 1* | – | – |
| Â | 300-400 | 0.83 | 0.55, 1.26 | 0.377 |
| Â | >400 | 0.62 | 0.41, 0.95 | 0.028 |
Access of stray cats to animals’ water | No | 1* | – | – |
| Â | Yes | 1.54 | 1.05, 2.26 | 0.027 |
ln(number tested) | (exposure) | – | – | – |