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Table 5 Coefficients of the generalized linear model and potential risk factors for infection intensity (tachyzoites equivalent per gram of tissues; log transformed) of Toxoplasma gondii in foxes (Vulpes spp.) in Canada

From: Are foxes (Vulpes spp.) good sentinel species for Toxoplasma gondii in northern Canada?

Variables β (SE) 95% Wald confidence interval Hypothesis test
   Lower Upper Wald-chi-Square df p-value
First model       
Species, Arctic fox 0.228 (0.3744) − 0.506 0.962 0.371 1 0.542
Sex, male 0.209 (0.2568) − 0.294 0.713 0.664 1 0.415
BCI, low 0.113 (0.3259) − 0.526 0.751 0.119 1 0.730
BCI, medium 0.581 (0.3327) − 0.071 1.233 3.046 1 0.081
Latitude 0.020 (0.0302) − 0.039 0.079 0.448 1 0.503
Age, young 0.384 (0.3200) − 0.244 1.011 1.438 1 0.231
Age, mature 0.320 (0.3377) − 0.342 0.982 0.898 1 0.343
Final model       
BCI^lat, low BCI 0.033 (0.0212) − 0.008 0.075 2.478 1 0.115
BCI^lat, medium BCI 0.042 (0.0207) 0.002 0.083 4.152 1 0.042*
BCI^lat, high BCI 0.030 (0.0216) − 0.013 0.072 1.895 1 0.169
  1. BCI body condition index, β estimate coefficient, SE standard error, df degree of freedom, BCI^lat interaction term
  2. *Statistically significant at p < 0.05