TABLE. Number and percentage of identified cases of amyotrophic lateral sclerosis (N = 15,927) and estimated prevalence, by age group, sex, race, and geographic region — National ALS Registry, United States, 2014.

Characteristic	Population*	No. (%) ALS cases	Prevalence estimate (cases per 100,000 population), % (95% CI)
Age group (yrs)
18–39	94,902,312	506 (3.2)	0.5 (0.5–0.6)
40–49	41,479,525	1,587 (10.0)	3.8 (3.5–4.2)
50–59	44,082,258	3,492 (21.9)	7.9 (7.4–8.4)
60–69	33,891,398	4,861 (30.5)	14.3 (13.7–15.0)
70–79	18,995,348	3,807 (23.9)	20.0 (19.2–20.9)
≥80	11,922,597	1,623 (10.2)	13.6 (13.1–14.2)
Unknown	—	51 (0.3)	—
Sex
Males	156,936,487	9,821 (18.6)	6.3 (6.1–6.4)
Females	161,920,569	5,854 (36.8)	3.6 (3.5–3.7)
Unknown	—	252 (1.6)	—
Race
White	233,963,128	12,660 (79.5)	5.4 (5.2–5.5)
Black	40,379,066	988 (6.2)	2.4 (2.3–2.6)
Other	—	863 (5.4)	—
Unknown	—	1,416 (8.9)	—
U.S. Census region†
Midwest	67,745,108	3,832 (24.1)	5.7 (5.4–5.9)
Northeast	56,152,333	3,075 (19.3)	5.5 (5.2–5.8)
South	119,771,934	5,682 (35.7)	4.7 (4.6–4.9)
West	75,187,681	3,252 (20.4)	4.3 (4.1–4.5)
Unknown	—	86 (0.5)	—
Total	318,857,056	15,927	5.0 (4.9–5.1)

Abbreviations: ALS = amyotrophic lateral sclerosis; CI = confidence interval.

* From 2014 U.S. Census data.

^† Northeast: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont; South: Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, West Virginia; Midwest: Iowa, Illinois, Indiana, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin; West: Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming.