Limitation of activity and mobility due to chronic conditions.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002908:Chronic Disease / Q000453:epidemiology*; D003710:Demography; D006233:Persons with Disabilities; D005260:Female; D006801:Humans; D007103:Immobilization; D008297:Male; D008875:Middle Aged; D012959:Socioeconomic Factors; D014481:United States