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

Table 6 **Summary of spatial clusters* of high condemnation rates by entire study period (2001 – 2007)**

Cluster	Total number of abattoirs	Radius (km)	Total number of pigs condemned	Total number of pigs processed	CR/1000 pigs	RR	P-value
1	21	66.81	3 446	103 116	33.42	6.85	0.0001
2	1	0	1 895	34 109	55.56	10.24	0.0001
3	5	20.53	320	12 198	26.23	4.32	0.0001
4	3	13.71	130	3 728	34.87	5.69	0.0001
5	2	8.21	55	2 790	19.71	3.20	0.0001
6	1	0	47	3 128	15.03	2.44	0.0001
7	10	31.20	270	31 210	8.65	1.41	0.001

* Detected with a Poisson model using the spatial scan statistic run over the entire study period (2001 – 2007) with a maximum scanning window of 50% of abattoirs and significance level alpha ≤ 0.05.
Descriptive statistics indicating total market hogs (pigs) condemned, processed, corresponding condemnation rates (CR) per 1000 market hogs processed and relative risks (RR) within these clusters.

ISSN: 1756-0500