Table 3.

Comparison of the mouse populations overexpressing the SOD1 mutations.

SOD1 Mutation	Average Age at Onset (Weeks)	Log Average Age at Onset	Average Incidence (%)	Log Average Incidence	Slope	Steps
G93A	16.0	0.57	29.6	1.43	1.16	2
G85R	46.4	1.03	12.7	0.92	4.84	6
G37R	32.8	0.90	15.1	1.11	1.53	3
H46R	21.6	0.73	31.5	1.42	3.00	4