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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
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BMC Veterinary Research

ISSN: 1746-6148

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