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> 1.2.6 > 1.2.6.3 > 1.2.6.3.1 > Cohen 1995 References |
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"Low Level Revision 1 1.2.6.3 1.2.6.3.1
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Professor Emeritus Bernard L. Cohen, in
the principle report in a series of papers and analyses correlating 272,000 home radon
measurements vs lung cancer by county in the US, considering and responding to all
concerns about alternative explanations and confounding factors, (1995) states:
"A compilation has recently been completed of average indoor radon levels in 1,729 U.S. counties, over half of all U.S. counties and representing nearly 90% of the total U.S. population (Cohen 1992, 1994). Data from it were used to derive Fig. 1 (a and b) which show plots of age-adjusted lung cancer mortality rates, m, for white males (1a) and females (1b) (Riggan and Mason 1983) vs. average radon level, r, in living areas of homes in these counties. "... Rather than showing a data point for each county, all counties within
various ranges of r (marked on the base line) are grouped together, and only the average m
for each group is plotted, along with the standard deviation of the mean (error bars) and
the first and third quartiles. The solid line is the best straight line fit to the data
for the individual counties. In Fig. 1 (a and b), we see a clear tendency for m to
decrease with increasing r, in sharp contrast to the increase expected from the fact that
radon is believed to cause lung cancer." |
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> 1.2.6 > 1.2.6.3 > 1.2.6.3.1 > Cohen 1995
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