RE: Cancer deficiency clusters

["Dov Brickner" <brickner@zahav.net.il>]

> -----Original Message-----

> From: owner-radsafe@list.vanderbilt.edu

> [mailto:owner-radsafe@list.vanderbilt.edu]On Behalf Of

> hflong@postoffice.pacbell.net

> Sent: Friday, July 19, 2002 1:03 PM

> To: jjcohen

> Cc: Gibbs, S Julian; Jacobus, John (OD/ORS); Radsafe Mail list

> Subject: Re: Cancer deficiency clusters

>

>

> Yes, Jerry,

> Such a study has been done on 27,872 nuclear shipyard workers - but until

> recently only reported as not showing expected increase in cancer.

>



An important component of the "power" of a study is the relation of the

findings to the study design and aims. If the study was desinged to find

INCREASED morbidity but found DECREASED morbidity then the findings are

only suggestive , and the appropriate conclusion is that no increased

morbidity was found. In order to mkae the findings more definitive the

study design shoud have been to find EITHER INCREASEAD orDECREASED

morbidity. To date I'm not aware of a study designed to find out decreased

morbidity



Dov  (Dubi)Brickner   MD

Beer Sheva    ISRAEL









> John Cameron, one of 8 members of the technical advisory committee of the

> Nuclear Shipyard Workers Study reports, "The cancer death rate

> of the NW>0.5

> group [those receiving an extra 0.5 rem] was over 4 std.dev.

> lower than the

> NNW control group [non-nuclear workers of similar ages and

> jobs]. This good

> news is not mentioned but the data are available in the final report."

> http://www.aps.org/units/fps/oct01/a5oct01.html

>

> Howard Long

>

> jjcohen wrote:

>

> > I am not an epidemiologist, so perhaps someone else might shed some

> > light on this question.-- Suppose a community were found to

> > have a cancer incidence significantly below statistical expectation.

> > Certainly such communities must exist, perhaps even near nuclear power

> > plants.

> > What are the chances that one might obtain funding to

> investigate probable

> > causes for  cancer deficiency? Has such  study ever been done?

> >





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