Skip to main content

Table 2 Unconditional Logistic Regression of factors associated with African swine fever seropositivity of 144 pig herds with herd size as a continuous variable in southwest Nigeria, 2013

From: Sero-prevalence and risk factors associated with African swine fever on pig farms in southwest Nigeria

Variables DF β Standard Error Wald Chi-Square ORb 95% Wald CIc P-value
Intercept 1 −1.60 0.51 9.98    0.00
aSeason (Dry/Rainy) 1 0.58 0.59 0.96    0.33
Source (External/Internal) 1 0.98 0.47 4.38 2.7 1.1; 6.7 0.04
aHerd size 1 −0.01 0.01 2.61    0.11
Season*Herd size 1 0.02 0.01 4.22    0.04
  1. aDue to interactions between season of the year and herd size, odds ratio were not expressed because they depend on the individual value of both variables
  2. bOdds ratio
  3. cConfidence interval
  4. *Interaction term