Prevention of Hearing Impairment and Deafness —Special Problems in Korea
Approximately one child in a thousand is reported to be born with profound hearing impairment. A study by Ajou University Hospital in Korea from March 1998 through Dec. 2001 reported that 0.05% of normal neonates and 1.11% of NICU neonates are born with moderate or severe hearing impairment . According to the registry of handicapped persons in Korea in 2003, the number of hearing impaired persons with a severe handicap, to the extent that normal social life is impossible is listed in Table 1.The analysis of data collected by Gallaudet University in the 1969–1970 Annual Survey of Hearing Impaired Children and Youth showed that genetic causes of hearing impairment were 50.7% of children, while analysis of the survey data collected two decades later (1988–1989) estimated a genetic etiology in 62.8% of cases.
KeywordsHearing Loss Hearing Impairment Hearing Threshold Otoacoustic Emission Pure Tone Audiometry
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