title: Hearing impairment in Oslo born children 1989-91. Incidence, etiology and diagnostic delay.
abstract: An investigation of incidence, etiology and diagnostic delay was performed in Oslo born children referred to the audiological department of Ullevål Hospital in the period 1989-91; hearing loss in these children required amplification and audiopedagogical training. An increase in incidence compared with 1975-84 was found. No child had a hearing loss caused by rubella. The age at time of diagnosis is increased, with a median age of 28 months. Children with moderate hearing losses are diagnosed at later ages. A considerable delay in the diagnosis of hearing-impaired children is shown.
authors.affiliation: Department of Otorhinolaryngology, Ullevål Hospital, Oslo, Norway.
authors.forename: K J
authors.initials: KJ
authors.lastname: Kvaerner
authors.forename: A R
authors.initials: AR
authors.lastname: Arnesen
mesh_terms: D002675:Child, Preschool; D004432:Ear, Middle / Q000503:physiopathology; D016057:Evoked Potentials, Auditory, Brain Stem; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis* / Q000453:epidemiology / Q000209:etiology; D006320:Hearing Tests; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D015997:Neonatal Screening; D009664:Norway / Q000453:epidemiology; D010033:Otitis Media / Q000150:complications / Q000503:physiopathology; D012189:Retrospective Studies