Table 5.

Estimates of parameters in RBE model (Eq. 5) based on Poisson regression that includes all observed data, both pre- and post-flight with separate terms for sensitivity to gamma radiation (${\beta }_{1,pre}$) and BFO dose (${\beta }_{1,post}$) as well as overall age and gender effects.

RBE model parameter	Equation (5) predictor variable	Est	SE	Z-value	p
β1,pre	xpre,ij	4.031	0.14	28.7	< 0.001
β1,post	xpost,ij	12.475	1.058	11.8	< 0.001
β2	A50i	0.027	0.011	2.4	0.018
β3	Fi	0.153	0.11	1.4	0.164
β0	1	− 5.679	0.064	− 89.3	< 0.001