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Laterality, type, and severity data for permanent cases of hearing loss reported for 2005 and 2006a
aData source: 2005 and 2006 CDC Hearing Screening and Follow-up Survey
bNot all respondents reported type and severity data for all cases of hearing loss that were identified.
cThese data were not requested by the 2005 and 2006 CDC Hearing Screening and Follow-up Survey.
NA = not available
CDC = Centers for Disease Control and Prevention
