Re: Interesting paper

["Otto G. Raabe" <ograabe@UCDAVIS.EDU>]

At 05:26 PM 7/5/01 -0000, Jim Nelson wrote:

>

>Journal of the Royal Statistical Society: Series A (Statistics in Society)

>

>A parallel analysis of individual and ecological data on residential radon 

>and lung cancer in south-west England

>volume 164: Issue 1

>Sarah Darby: Imperial Cancer Research Fund, Oxford, UK

>Harz Deo: Imperial Cancer Research Fund, Oxford, UK

>Richard Doll: Imperial Cancer Research Fund, Oxford, UK

>Elise Whitley: University of Bristol, UK

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July 5, 2001



The full abstract of this article shows that they found no statistically

significant effect in that "...the relative risk of lung cancer at 100 Bq

per cubic meter compared with at 0 Bq per cubic meter was 1.12 (95%

confidence interval (0.99, 1.27)) after adjusting for age, sex, smoking,

county of residence and social class." That means they should not be

reporting that there was an observed effect. 



The abstract does not explain how many people in the study were exposed to

0 Bq per cubic meter.



Otto



**********************************************

Prof. Otto G. Raabe, Ph.D., CHP

Institute of Toxicology & Environmental Health

(Street Address: Bldg. 3792, Old Davis Road) 

University of California, Davis, CA 95616

E-Mail: ograabe@ucdavis.edu

Phone: (530) 752-7754   FAX: (530) 758-6140

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