Table II. Demographic characteristics of ALS patients reported by project areas.

	Combined areas n = 5883		States n = 3620		Metropolitan areas n = 2263
	#	%	#	%	#	%
Age (in years)
< 30	75	1.3	37	1.0	38	1.7
30 – 39	262	4.4	159	4.4	103	4.6
40 – 49	748	12.7	452	12.5	296	13.1
50 – 59	1405	23.9	840	23.2	565	24.9
60 – 69	1698	28.9	1076	29.7	622	27.5
70 – 79	1238	21.0	794	21.9	444	19.6
≥ 80	403	6.9	237	6.6	166	7.3
Unknown	54	0.9	25	0.7	29	1.3
Gender
Male	3322	56.5	2047	56.5	1275	56.3
Female	2561	43.5	1573	43.5	988	43.7
Race
White	4401	74.8	2808	77.6	1593	70.4
African American/black	546	9.3	241	6.7	305	13.5
Asian	214	3.6	72	2.0	142	6.3
Other	18	0.3	8	0.2	10	0.4
Unknown	704	12.0	491	13.6	213	9.4
Ethnicity
Hispanic	634	10.8	410	11.3	224	9.9
Non-Hispanic	4562	77.5	2804	77.5	1758	77.7
Unknown	687	11.7	406	11.2	281	12.4