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Post by Joe Neubarth on Jan 31, 2012 9:02:31 GMT -5
ratical.org/radiation/CNR/PBC/chp4F.html[...]How can annual incidence-rate become equal to annual production-rate, despite the variable latency period? In a problem such as this, it helps a great deal to start with some simplified or idealized conditions, so that the mind is not diverted by real but momentarily deferrable details, to which we will attend gradually. In our first demonstration, readers should note three key conditions: The same age for everyone who is irradiated, the same number of such people, year after year, and the same radiation dose, year after year. By people, we mean female people, since our focus in this book is breast-cancer. So, for the first demonstration, we arbitrarily say that the age is 5 years of age, the number of such female children is constant but not specified, and the radiation dose to the breasts each year is a dose which produces (commits) a total of 100 cases of breast-cancer, excluding any cases which occur sooner than ten years after production. [...]
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