[ RadSafe ] e: U.S. Nuclear Power Industry Workers Study - Healthy Worker Effect

[Susan Gawarecki]

John,

I can't easily lay my hands on the report, but I could track down the 
author if necessary.  Statistical significance was gained by combining 
the studies of the ten facilities to get a large enough population.

Susan Gawarecki

John Jacobus wrote:

>One question I have was the difference between the
>numbers statistically significant.  I don't just mean
>that one numbers was 36 and the other 45.
>
>I am not saying I am an expert in the area but would
>like to offer the following.  Consider that the number
>of cancers in the cohort, non-exposed group was 45,
>and the confidence level was 6 to 70.  Now, if the
>cancers in the exposured group was 36, that is
>certainly with the expected range of 6 to 70.  I would
>say that would show that there is no harmful effect. 
>However, to say that there is a healthy worker effect
>would be a stretch is all other factors, e.g., age,
>children born, smoking, etc., were held equal.
>
>Can you cite the report?
>  
>