Table 3 Predicted prevalence of the final multivariate logistic regression model for the different categories of the independent variables and 95% confidence intervals

England

0.68

0.52 – 0.89

Wales

0.69

0.56 – 0.84

Scotland

0.48

0.3 – 0.76

Route

WFC*

0.47

0.32 – 0.68

G & C**

0.7

0.6 – 0.83

Source

Clinical suspect

0.64

0.54 – 0.77

Abattoir survey

1.12

0.61 – 2

Fallen Stock/DIT***

0.58

0.4 – 0.84