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Table 3 Coefficients, incidence risk ratios and 95% and their confidence intervals for the final two models using the count of positive confirmed cases in the initial cull as dependent variable and the flock-susceptibility risk indicators as the main explanatory variables.

From: The impact of the genotype on the prevalence of classical scrapie at population level

Variables Model 4 (Low susceptibility) Model 5 (High susceptibility)
  Coef. IRR 95%CI Coef. IRR 95%CI
constant -4.05   -6.2- -1.91 -4.23   -6.16- -2.3
Flock-susceptibility risk indicator 0.42 1.52 1.15-2 0.46 1.59 1.21-2
Country       
Wales 1.93 6.9 0.8-60 2.2 9 1.12-72.2
Scotland 2.24 9.4 1.15-76.2 2.23 9.4 1.31-66.9
# animals (baseline: < 300)       
300-1 000 2.37 10.7 1.34-86.2 2.34 10.4 1.52-71
> 1 000 2.95 19.1 2.53-145 3 20.2 3.13-130.4
Scotland × 300-1 000 -3.6 0.02 0-0.78 -3.6 0.02 0-0.57
Scotland × > 1 000 -4.3 0.01 0-0.2 -4.38 0.01 0-0.17
  1. Parameters in bold are significant at 0.05 level