The incidence of deafness in childhood.
D000293:Adolescent; D000367:Age Factors; D001299:Audiometry; D002648:Child; D002675:Child, Preschool; D003638:Deafness / Q000151:congenital / Q000175:diagnosis / Q000453:epidemiology*; D004519:Education, Special; D006311:Hearing Disorders / Q000175:diagnosis; D006801:Humans; D007223:Infant; D009660:Northern Ireland