[ RadSafe ] Excess relative risk

John Jacobus crispy_bird at yahoo.com
Sat Jan 26 16:08:48 CST 2008

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


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-- John
John Jacobus, MS
Certified Health Physicist
e-mail:  crispy_bird at yahoo.com
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