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Hearing levels of adults by education, income, and occupation, United States, 1960-1962
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May 1968
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[PDF-3.91 MB]
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Description:Prevalence rates for hearing threshold in the better ear in excess of 15 decibels above and 5 decibels or more below audiometric zero, as determined by pure-tone audiometric tests at frequencies of 500, 1000, 2000, 3000, 4000, and 6000 cycles per second.
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Content Notes:Public Health Service publication, no. 1000-Ser. 11-no. 31.
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Pubmed ID:5304130
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Document Type:
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Pages in Document:print; iv, 41 p. : ill.
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Issue:31
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