RT Journal Article
SR Electronic
T1 Incidence of amyotrophic lateral sclerosis in three counties in western Washington state
JF Neurology
JO Neurology
FD Lippincott Williams & Wilkins
SP 571
OP 573
DO 10.1212/WNL.47.2.571
VO 47
IS 2
A1 Valerie McGuire
A1 W. T. Longstreth, Jr
A1 Thomas D. Koepsell
A1 Gerald van Belle
YR 1996
UL http://n.neurology.org/content/47/2/571.abstract
AB We conducted a population-based study of amyotrophic lateral sclerosis (ALS) in King, Pierce, and Snohomish counties in western Washington state. Between April 1, 1990 and March 31, 1995, neurologists diagnosed 235 patients with ALS, including 127 men (54%) and 108 women (46%). The incidence rate, age-adjusted to the 1990 total U.S. population, was higher for men at 2.1 per 100,000 per year (95% CI, 1.3 to 2.9) than for women at 1.9 (95% CI, 1.1, 2.7) and increased with age for both men and women. These incidence rates are consistent with other studies from northern latitudes. NEUROLOGY 1996;47: 571-573