Suitability and limitations of portion-specific abattoir data as part of an early warning system for emerging diseases of swine in Ontario

Table 5 Summary of spatial clusters of high kidney condemnations

Cluster	# Abattoirs	Radius (km)	# Kidneys	# Pigs	CR/1000 pigs	RR	P-value
1	51	198.41	7 202	148 728	48.42	9.68	0.0001
2	22	55.17	8 211	747 652	10.98	1.74	0.0001
3	1	0	291	5 178	56.20	7.26	0.0001
4	1	0	142	1 923	73.84	9.47	0.0001
5	5	37.91	236	12 905	18.29	2.35	0.0001
6	1	0	175	9 051	19.33	2.48	0.0001
7	1	0	20	336	59.52	7.58	0.0001

Summary of statistically significant (p < 0.05) spatial clusters* of high kidney condemnations for Ontario Provincial abattoirs (2001-2007).**
*SaTScan settings specified as: maximum scanning window of 50% of market hogs (pigs) slaughtered.
** Descriptive statistics indicating total kidneys condemned, carcasses processed (# pigs), corresponding condemnation rates (CR) per 1000 market hogs (pigs) processed and relative risks (RR).

ISSN: 1746-6148