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

Table 4 Summary of spatial clusters of high lung condemnations

Cluster	# Abattoirs	Radius (km)	# Lungs	# Pigs	CR/1000 pigs	RR	P-value
1	36	75.43	15 444	706 969	21.85	3.81	0.0001
2	5	29.16	4 318	64 270	67.19	7.37	0.0001
3	1	0	135	3 790	35.62	3.32	0.0001
4	2	15.46	130	4 967	26.17	2.44	0.0001
5	1	0	99	3 692	26.82	2.50	0.0001
6	1	0	197	12 981	15.18	1.41	0.0027

Summary of statistically significant (p < 0.05) spatial clusters* of high lung 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 lungs condemned, carcasses processed (# pigs), corresponding condemnation rates (CR) per 1000 market hogs (pigs) processed and relative risks (RR).

ISSN: 1746-6148