Persons with impaired hearing United States, 1971.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D044383:Black People; D002648:Child; D002675:Child, Preschool; D003638:Deafness / Q000145:classification / Q000453:epidemiology*; D004522:Educational Status; D005260:Female; D006310:Hearing Aids / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014481:United States; D044465:White People; D001741:Black or African American