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

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

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

* 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.
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.

ISSN: 1756-0500