title: Estimated annual number of patients treated for sensorineural hearing loss in Japan. Results of a nationwide epidemiological survey in 1987.
abstract: We mailed questionnaires to 98 university hospitals and 939 hospitals with 200 beds or more throughout Japan asking for information on patients treated for sensorineural hearing loss between January 1 and December 31, 1987. The number of patients treated for sensorineural hearing loss in 1987 in Japan was estimated 13,900-19,600, ii) idiopathic bilateral progressive sensorineural hearing loss 13,900-19,600, ii) idiopathic bilateral progressive sensorineural hearing loss in 800-2,000, iii) perilymphatic fistula in 200-310, iv) mumps deafness in 200-400, and v) unilateral profound deafness in 2,000-3,000. Sex ratio (men over women) was 0.9 in sudden deafness and mumps deafness, 1.1 in idiopathic bilateral progressive sensorineural hearing loss and 1.5 in perilymphatic fistula. Patients were distributed with a definite peak from 50 to 59 years old in sudden deafness, from 30 to 39 years old in perilymphatic fistula, and two apparent peaks in teenagers and those aged 60-69 years in idiopathic bilateral progressive sensorineural hearing loss.
authors.affiliation: Department of Otorhinolaryngology, Nagoya University School of Medicine, Japan.
authors.forename: N
authors.initials: N
authors.lastname: Yanagita
authors.forename: T
authors.initials: T
authors.lastname: Nakashima
authors.forename: Y
authors.initials: Y
authors.lastname: Ohno
authors.forename: J
authors.initials: J
authors.lastname: Kanzaki
authors.forename: T
authors.initials: T
authors.lastname: Shitara
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D015834:Cochlear Diseases / Q000453:epidemiology; D003638:Deafness / Q000453:epidemiology / Q000209:etiology; D005260:Female; D005402:Fistula / Q000453:epidemiology; D006309:Hearing / Q000502:physiology; D006312:Hearing Loss, Bilateral / Q000453:epidemiology; D006319:Hearing Loss, Sensorineural / Q000453:epidemiology* / Q000628:therapy; D003639:Hearing Loss, Sudden / Q000453:epidemiology; D006801:Humans; D007223:Infant; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009107:Mumps / Q000150:complications; D010498:Perilymph; D012737:Sex Factors; D013997:Time Factors; D016896:Treatment Outcome