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Statistical issues on the determination of the no-observed-adverse-effect levels in toxicology

✍ Scribed by Takashi Yanagawa; Yasuki Kikuchi


Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
182 KB
Volume
12
Category
Article
ISSN
1180-4009

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✦ Synopsis


Abstract

The determination of a safe exposure level for toxic agents, often defined as the highest dose level with no toxic effect and termed the no‐observed‐adverse‐effect level (NOAEL) is reviewed. The conventional methods based on statistical tests are criticized, particularly when the sample size is small, and an alternative method, which is based on the Akaike information criterion (AIC), is discussed. The method is extended to the estimation of the NOAEL for continuous data. Computer programs for Windows 95/NT for determining the NOAEL by the AIC approach are developed and its application to practical data is illustrated with examples. Copyright © 2001 John Wiley & Sons, Ltd.


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