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Electronic Letters to:

Original Articles - Basic Science:
M. Surekha Bhat, Guruprasad Rao, K. Dilip Murthy, and P. Gopalakrishna Bhat
Housing in Pyramid Counteracts Neuroendocrine and Oxidative Stress Caused by Chronic Restraint in Rats
eCAM 2007; 4: 35-42 [Abstract] [Full text] [PDF]
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[Read eLetter] Simple Standard Statistial Test Failed
Adrian P Gaylard   (28 June 2007)

Simple Standard Statistial Test Failed 28 June 2007
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Adrian P Gaylard,
Chartered Physicist
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Re: Simple Standard Statistial Test Failed

Sir,

With the single exception of plasma cortisol level, the measurements reported in this paper (Erythrocyte Membrane Lipid Peroxidation, Reduced GSH, GSH-Px Activity, SOD Activity) all fall within plus or minus two standard deviations of the Normal Control (NC) population mean. Therefore the differences between the NC and other rat populations are not significant at the 95% level.[1]

Therefore the contention that: "The results showed that housing in pyramid counteracts neuroendocrine and oxidative stress caused by chronic restraint in rats." is without adequate foundation.

[1]http://en.wikipedia.org/wiki/Confidence_interval

Conflict of Interest:

None declared