On 10 Jan 2010 at 9:58, Jonathan Middle wrote:
> http://news.bbc.co.uk/1/hi/health/8395732.stm
All very interesting, but - "It is important to check the validity of any
discriminant analysis, particularly when the data used do not
correspond directly to known biochemical factors. Using the
discriminant function on a new set of data also provides a check on
the comparability of the groups of subjects." Wilding et al (1979) Clin
Chem 25: 476-480
Conclusion: check that it works on an independent set of data before
publishing - unfortunately this is often not done for such studies,
including some by Linus Pauling . . .
Best wishes
David
Dr David Bullock
Director, Birmingham Quality
P O Box 3909, Birmingham B15 2UE, U K
FAX: 0121 414 1179 [+44 121 414 1179]
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