Table 19, Parameters used in analysis of uncertainty and variability in estimated dose and cancer risk to hypothetical Rongelap residents. ty Parametersé Symbol Variate typeb Value or distribution model¢ Unit Unit-conversion factor c Cc 2.431 x 10-4 Radiological decayrate of 137Cs A Cc 0.0230 Faction input to slow compartment F UV U(2F -1, 1) unitless Variability expectation of F F U U(0.855, 0.945) unitless Biological half-life of slow compartment H Vv LN(in(F)-(s2,,H) / 2), sun(t)| y Population-average value of H H Cc 110/365 y Uncertainty associated with H B U U(0.9, 1.107) unitless SD of Ln(H)-variability SLn(H) Cc 0.275 unitless Population-average value of R R U N((R).(R)gr) Bq/kg-y Expected value of R (R) Cc 0.447x 365 Bq/kg-y Annualdietary intake of 137Cs R UV LN(in(R) - (st,(R) / 2), sun(R)] Bq/kg-y CV of (R) variability 8R V 0.9821 unitless SD of Ln(R) variability SLn(R) Cc 0.8217 unitless CV in R due to dietary sampling uncertainty YR C 0.034 unitless Uncertainty (model bias) associated with R B U LN(-1.463, 0.8639) unitless U LN(-7.970, 0.5409) cSv-l Uncertainty risk per unit dose cSv kg Bqu! y-1 : y" a SD standard deviation, CV = SD/mean ¢ U (ab) = uniformly distributed between a and b, LN (a,b) = lognormally distributed with geometric mean e* and geometric SD e%, C = constant, U = uncertainty, V = interindividually variable (i.e., heterogeneous), UV = both uncertain and heterogeneous.