tag:blogger.com,1999:blog-10911751.post4567571406502391249..comments2024-03-07T02:00:01.582-05:00Comments on NEI Nuclear Notes: All Around Us, In Us, Emitted from UsUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-10911751.post-27546083030982044072011-05-18T17:58:49.448-04:002011-05-18T17:58:49.448-04:00Was there any data on the doses received by the do...Was there any data on the doses received by the doctors? If not, how can the data be used to prove or disprove anything?<br /><br />And I'd expect the healthy-worker effect would be true in spades for doctors. <br /><br />Doctors also get more and better health care, and are in higher socioeconomic groups, than the average person from the general population. Were those factors controlled for?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-10911751.post-85776945270205243052011-05-18T13:37:18.933-04:002011-05-18T13:37:18.933-04:00Dr. Boice makes the point that we extrapolate from...Dr. Boice makes the point that we extrapolate from large one time doses in order to estimate the effect of multiple small doses of ionizing radiation. Here is a 100-year study of British radiologists as compared to other physicians who were not radiologists.<br /><br />The 100-year study of British radiologists is the most important study of the effects on health from moderate dose rate radiation. This compared the death rates resulting from cancer, non-cancer, and overall causes of British radiologists to a control group of all male medical doctors (non-radiologists), as well as all social class I males, as well as all the men of England and Wales. Cohorts of radiologists were analyzed by the date they joined a radiological society; these are: 1897–1920, 1921–1935, 1936–1954, and 1955–1979.<br /> Following 1920 British radiologists never demonstrated a statistically significant increase in cancer mortality compared to controls. In fact, radiologists joining a society after 1920 had lower cancer mortality than the average for the whole population of England and Wales. Further, for the group of radiologists joining a society after 1954, as compared to their most relevant peer group (male medical practitioners), the radiologists had 29% lower standardized mortality rate (SMR) from cancer, 32% lower SMR from all causes, and 36% lower SMR from non-cancer causes.<br />John TjostemAnonymousnoreply@blogger.com