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Table 7 Summary of spatial clusters* of high condemnation rates by individual years

From: Exploring relationships between whole carcass condemnation abattoir data, non-disease factors and disease outbreaks in swine herds in Ontario (2001–2007)

Year Number of abattoirs Radius (km) Number of pigs condemned Number of pigs processed Condemnation rate/1000 pigs Relative risk (RR)
2001 14 66.81 316 11 821 26.73 7.69
2002 17 65.03 780 17 543 44.46 12.54
2003 11 57.67 207 5 817 35.59 9.44
2004 1 0 327 7 031 46.51 9.02
2005 25 134.23 1 084 45 187 23.99 4.02
2006 21 78.59 1 354 40 081 33.78 9.79
2007 1 0 395 6 054 65.25 16.52
  1. * Detected with a Poisson model using the spatial scan statistic run by individual years (2001 – 2007) with a maximum scanning window of 50% of abattoirs and significance level alpha ≤ 0.05.
  2. Descriptive statistics indicating total market hogs condemned, processed, corresponding condemnation rates (CR) per 1000 market hogs processed (pigs) and relative risks (RR) within these clusters.