[ RadSafe ] Excess relative risk

[John Jacobus]

Of course, there is no proof of negative excess risk.  
  

howard long <hflong at pacbell.net> wrote:
  What would make clear in that formula that kD is 
a NEGATIVE excess relative risk when radiation exposure is under ~20cGy (rad), rapid rate, 
i.e. hormesis? +-kD?

Howard Long

----- Original Message ----
From: Otto G. Raabe 
To: radsafe at radlab.nl
Sent: Friday, January 11, 2008 12:11:10 PM
Subject: [ RadSafe ] Excess relative risk

January 11, 2008

If R=R(0)[1+kD] then the excess relative risk is kD.

Excess relative risk is {R-R(0)}/R(0) = {R(0)[1+kD]-R(0)}/R(0) =kD

Otto



+++++++++++++++++++
"If history teaches any lesson it is that no nation has an inherent right to greatness.  Greatness has to be earned and continually re-earned."
- Norman Augustine, Chairman of the National Academies Committee 

-- John
John Jacobus, MS
Certified Health Physicist
e-mail:  crispy_bird at yahoo.com
       
---------------------------------
Never miss a thing.   Make Yahoo your homepage.