2012-2013 / 2063
!
Relative risk (RR)
expression of excess risk
relative
to the underlying (baseline) risk.
If excess risk is zero, RR is 1 (100%).
If excess risk equals the baseline risk, RR is 2 (200%)
!
Absolute risk
expression of excess risk based on the assumption that the
excess risk from radiation exposure
adds
to the underlying risk
by an increment dependent on dose but
independent of the underlying natural risk
Relative risk
is preferred to
Absolute risk