To determine the risk factors associated with the seropositive, explanatory nominal variables associated with C.burnetii seropositive with a p < 0.2 were selected by a Chi-square test. The odds ratio (OR) and 95% confidence interval(CI95%) were also calculated to determine the direction ofthis association.
A non-parametric Kolmogorov–Smirnovtest was used to assess the association between the seropositive to C. burnetii and quantitative variables.
Covariates correlated with a p < 0.2 were included from further analysis.