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RE: Chernobyl disaster caused cancer cases in Sweden
No one knows how any why the authors chose the reference (background) level
at 3 kBq/m2. One may ask what the outcome had been at 2 kBq/m2 or 4 kBq/m2.
One factor that may be important is that there is a downtrend for incidence
(not deaths) in myocardial infarction (and other related cardiovascular
diseases) and an uptrend in cancer incidence (as a cause of death CHD is
approx. down in Sweden from about 54 % to 44 % of all causes over the last
20 years). Some preliminary info indicates that this may be more pronounced
in the northern (and colder) parts of Sweden. The Chernobyl fallout areas
were essentially north of Stockholm in the colder areas (quite heterogenous
fallout pattern depending on winds and local rain). The downtrend in the
cardiovascular diseases is probably more pronounced up north. If these
people live longer there is a higher probability that they will contribute
to the cancer incidence. A few warmer winters than average in the areas may
contribute to subsequent increases in cancer incidence over the next years -
who knows unless it is analyzed?
In other words - regardless of whether the just written could be of
relevance, with a general uptrend in cancer incidence, statistical fishing
expeditions should be facilitated - or what do you think?
Someone said today that the paper had been rejected by several other
journals (which ones?) before it was published. The promotion hypothesis is
far fetched and the Stewart & Kneale reference (which reasonably only as a
maximum could underestimate the total cancers of Hiroshima & Nagasaki by a
few dozens of extra cancer deaths - essentially leukemias) must be quite
irrelevant as the total seems to land somewhere in the order of 1650 extra
cancer deaths. As the authors didn't find any extra leukemias and emphasize
that their cohort wasn't delayed by 5 years the moral seems to be
inconsistent ("one rule for us and another one for others"). If I am wrong
in any reasoning - please point it out and I will be the first to correct
it.
My personal reflections only - not approved by anyone,
Bjorn Cedervall bcradsafers@hotmail.com
PS. Sorry about a dozen of typos, missed commas etc (there were probably
more that I am not aware of) in my previous messages - I am sure that you
got the essence - I can be quite blind looking at the monitor, and in
addition tired or busy.
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