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. 2023 Apr 26;10:1101988. doi: 10.3389/fvets.2023.1101988

Table 2.

Multivariable analysis of risk factors associated with seropositivity to C. burnetii in cattle farms in Limpopo province, South Africa.

Risk factor OR 95% CI Value of p
Abortion history
Yesa
No 1.09 0.64–1.87 0.74
Herd size
1–50a
51–100 1.48 0.64–3.44 0.36
101–150 1.38 0.78–2.46 0.26
>150 9.88 3.92–24.89 <0.01

Likelihood ratio Chi-squared = 2.31. Chi-squared probability = 0.13. OR, Odds ratio; CI, Confidence interval.

a

Reference category.