Longitudinal study of hearing-disabled children. A follow-up investigation.
A group of 138 hearing-impaired children, 76 boys and 62 girls, at a median age of 13 years, range 7-17 years, born during the period 1970-80, were examined in order to ascertain the incidence of progressive hearing loss, and if presence of progressive hearing loss relates it to specific causes of hearing impairment. After a 5-year interval from the median age of 8-13 years, progression of the hearing loss was demonstrated in 2-6% of the children (depending on the criterion used). No relationship could be established between progressive hearing loss and specific causes of hearing impairment.
Parving
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Audiological Department, Bispebjerg Hospital, Copenhagen.
D000293:Adolescent; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D034381:Hearing Loss / Q000503:physiopathology*; D006314:Hearing Loss, Conductive / Q000209:etiology / Q000503:physiopathology*; D006319:Hearing Loss, Sensorineural / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D000159:Vestibulocochlear Nerve / Q000503:physiopathology