Subject:  McBride study (fwd)
Date:     Tue, 1 Jun 1999 214221 -0500 (CDT)
From:     "Roy L. Beavers" <rbeavers@llion.org>
To:       emfguru <rbeavers@llion.org>
--------------------------------------------------


......O.K. Ed....  She says that it makes no difference to HER
study....  Have all the other studies applied the same definition???

Also:
I still have not been given a satisfactory answer as to why an O.R.
of 1.8 is considered (by McBride?) to absolve EMF of any risk???

Roy Beavers (EMFguru)......
rbeavers@llion.org.......
.....It is better to light a single candle than to curse the darkness.....
EMF-L web-site can be found at: 
EMF-L archives can be found at: 
..................PEOPLE ARE MORE IMPORTANT THAN PROFITS..................

---------- Forwarded message ----------
Date: Tue, 01 Jun 1999 15:34:27 -0500
From: Edward Maxey 
To: "Roy L. Beavers" 
Subject: McBride

Hello Roy,

Prior communications to you regarding the McBride study (Power-
Frequency Electric and Magnetic Fields and Risk of Childhood
Leukemia in Children, Am. J. Epidemiology, Vol 149, No. 9, p 831)
noted that there were 21 cases of leukemia from abodes within 100
meters of high power transmission lines.  Twenty of the twenty-one
cases were acute lymphatic leukemia.

Elsewhere this paper states that 88 percent of 399 cases had acute
lymphocytic leukemia.

This raised the question as to whether or not the study differentiated
between acute lymphocytic leukemia and acute lymphatic leukemia.

Here is Mary McBride's response:
   Further to your question about the term, "acute lymphatic leukemia",
I would refer you to the Second Edition of the International
Classification of
   Diseases for Oncology (World Health Organization, Geneva, 1990),
   which lists "acute lymphatic leukemia" and "acute lymphocytic
leukemia"
   as equivalent terms to "acute lymphoblastic leukemia, not otherwise
   specified" and coded to morphology code 9821/3.



Perhaps this information will be helpful to those on your list who
happen to
study this paper.

Cordially,
Ed Maxey




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Reprinted with permission of Roy Beavers, http://www.feb.se/EMF-L/EMF-L.html