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Table 2 Effect of location on the occurrence of antibodies to Chlamydia spp. and N. caninum in European bison

From: Pathogens with potential impact on reproduction in captive and free-ranging European bison (Bison bonasus) in Poland - a serological survey

Pathogen Source χ2 Df P
Chlamydia spp. Intercept 9.43 1 0.002*
Location 23.81 7 0.002*
N. caninum Intercept 0.00 1 0.999
Location 16.33 7 0.022*
  1. Legend: Effect of location on the occurrence of antibodies to Chlamydia spp. (model: χ2 = 31.85, df = 7, p < 0.001, N = 130) and N. caninum (model: χ2 = 33.15, df = 7, p < 0.001, N = 172) in European bison. Sex did not have a significant influence on the occurrence of Chlamydia spp., nor did age on N. caninum; therefore, these were excluded from the models in the backward elimination procedure (*statistically significant predictors)