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Prev Vet Med. 2008 Mar 17;83(3-4):337-46. Epub 2007 Nov 5.

Analyzing BSE surveillance in low prevalence countries.

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  • 1Office of Risk Assessment and Cost Benefit Analysis, U.S. Department of Agriculture, 1400 Independence Avenue SW, Washington, DC 20250, USA. mpowell@uce.usda.gov

Abstract

If the prevalence of bovine spongiform encephalopathy (BSE) varies among cohorts within a population, stratified analysis of BSE surveillance data may allow identification of differences in BSE exposure that are important with respect to the design and evaluation of disease prevention and control measures. In low BSE prevalence populations, however, surveillance at levels that meet or exceed international guidelines may provide insufficient statistical power to distinguish prevalence levels among cohorts. Furthermore, overstratification to account for hypothetical variability in the population may inflate uncertainty in BSE risk estimates.

PMID:
17980447
[PubMed - indexed for MEDLINE]
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