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Calculating the Sample Size in the Examination of Animals for the Presence of Residues Using Prior Information
Author(s) -
Fuchs K.,
Wernecke K. D.,
Gölles J.,
Köfer J.
Publication year - 1993
Publication title -
biometrical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.108
H-Index - 63
eISSN - 1521-4036
pISSN - 0323-3847
DOI - 10.1002/bimj.4710350707
Subject(s) - bayesian probability , sample (material) , statistics , distribution (mathematics) , prior probability , mathematics , econometrics , sample size determination , computer science , chemistry , chromatography , mathematical analysis
The council of the European Economic Communities has issued a directive (86/469/EEC) for the examination of animals and fresh meat for the presence of residues of several hormones, drugs and environmental pollutants. The purpose of this paper is to compare the method used by the EEC with a Bayesian approach to calculate necessary sample size using prior information in different situations (assuming Beta‐, Normal‐ and Gamma‐distribution for the prior distribution). It has been shown that the Bayesian approach requires significantly smaller sample sizes for all levels of inspection. Furthermore, an example is given in the examination of pigs for the presence of residues of drugs in pork.