Table 1. Mortality of amyotrophic lateral sclerosis in Japan.

Year	No. of death	Male/female ratio	Crude mortality*	Age adjusted mortality**	Mean age at death in years
1995	1249	1.30	1.00	0.79	65.7
1996	1342	1.33	1.07	0.84	66.8
1997	1336	1.33	1.06	0.79	66.8
1998	1327	1.33	1.05	0.75	67.0
1999	1382	1.30	1.09	0.76	67.3
2000	1371	1.34	1.08	0.73	68.9
2001	1400	1.35	1.10	0.74	67.8

*: Rate per 100,000 population

**: Rate per 100,000 population, adjusted by the 1985 population in Japan.