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Journals The FASEB Journal March 2009

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Unusual clustering of coefficients of variation in published articles from a medical biochemistry department in India

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A simple statistical method is described to test whether data are consistent with minimum statistical variability expected in a biological experiment. The method is applied to data presented in data tables in a subset of 84 articles among more than 200 published by 3 investigators in a small medical biochemistry department at a major university in India and to 29 "control" articles selected by key word PubMed searches. Major conclusions include: 1 ) unusual clustering of coefficients of variation (CVs) was observed for data from the majority of articles analyzed that were published by the 3 investigators from 2000–2007; unusual clustering was not observed for data from any of their articles examined that were published between 1992 and 1999; and 2 ) among a group of 29 control articles retrieved by PubMed key word, title, or title/abstract searches, unusually clustered CVs were observed in 3 articles. Two of these articles were coauthored by 1 of the 3 investigators, and 1 was from the same university but a different department. We are unable to offer a statistical or biological explanation for the unusual clustering observed.—Hudes, M. L., McCann, J. C., Ames, B. N. Unusual clustering of coefficients of variation in published articles from a medical biochemistry department in India.

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Article Details
Hudes, Mark L.; McCann, Joyce C.; Ames, Bruce N.
The FASEB Journal , Volume 23 (3): 689
Fed of American Socs for Experimental Biology – Mar 1, 2009
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