John Chung wrote:
> Hi. Has anyone seen this article below?
>
> Just when I thought this is not at all an issue for us nmr lab
> manager types, here's a story at UCLA website:
>
> http://www.ucla.edu/Templates/NewsItem1.html
>
Dear All,
It seems Epidemiology had a special issue on magnetic field exposure
(quick Medline search results below).
As far as I can see all five studies considered only exposure to
alternating magnetic fields (50-60 Hz).
There does appear to be an effect of exposure to NMR magnets in
Australia - most spectroscopists here have
female children!
(Sorry no hard stats).
Roger Bourne
<5>
UI - 97353620
AU - Kromhout H
AU - Loomis DP
AU - Kleckner RC
AU - Savitz DA
IN - Department of Air Quality, Wageningen Agricultural University, The
Netherlands.
TI - Sensitivity of the relation between cumulative magnetic field exposure and brain
cancer mortality to choice of monitoring data grouping scheme.
SO - Epidemiology 1997 Jul;8(4):442-5
AB - We examined the effectiveness of alternative grouping strategies with respect to
cumulative exposure to magnetic fields and brain cancer mortality among electric utility
workers. We applied a statistically optimal job-exposure matrix to calculate cumulative
exposure over full work histories. We studied the sensitivity of the exposure-disease
relation by assigning an array of different quantitative exposure estimates based on six
schemes for grouping exposure measurements. The quantitative relation between cumulative
magnetic field exposure and brain cancer mortality appeared to be sensitive to the choice of
grouping scheme, with the optimized grouping scheme indicating stronger relations than
standard schemes.
--
_______________________________________________
Dr. Roger Bourne
Senior Research Officer
Institute for Magnetic Resonance Research
University of Sydney 2006
AUSTRALIA
Tel: (02) 9351 6168 Fax: (02) 9351 4105
<rbourne_at_imrr.usyd.edu.au> www.imrr.org.au
_______________________________________________
Received on Tue Oct 31 2000 - 11:58:06 MST