From the Centers for Disease Control and Prevention. Prevalence of work disability--United States, 1990.
D000293:Adolescent; D000328:Adult; D006233:Persons with Disabilities / Q000706:statistics & numerical data*; D006801:Humans; D008875:Middle Aged; D016272:Occupational Health / Q000706:statistics & numerical data*; D015995:Prevalence; D014481:United States / Q000453:epidemiology