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RE: Breast Cancer Study



Howard,

Two comments.



1.  Is it possible that the study of Canadian women having fluoro was biased

because the subjects were patients who were receiving better medical care?

Diet? medications?  What was the control group?  Could it be something like

a "healthy worker effect?"



2.  Are you suggesting the that British radiologist study that John Cameron

likes to quote could also be flawed?  



-- John 



-----Original Message-----

From: hflong@postoffice.pacbell.net

[mailto:hflong@postoffice.pacbell.net]

Sent: Saturday, June 22, 2002 2:38 AM

To: Thomas Jones

Cc: radsafe@list.vanderbilt.edu

Subject: Re: Breast Cancer Study

. . .



Animal and ecologic studies -like Canadian women having more fluoroscopy

(for

TB pneumothorax) having had LESS breast cancer - suggest to me that

mammography actually reduces breast cancer risk.

. . .



Technicians prior to 1950 are not good controls for those after 1960 because

Lubin's ."subsequent decline in risk" was associated with  more enlightened

working conditions, and selection of technicians with less risk - as well as

with lower dose.

. . .

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