Identification of childhood hearing impairment in Uusimaa County, Finland

The purpose was to report the identification age of the hard-of-hearing children born between 1 January 1973 and 31 December 1990. The subjects comprised all children (353) fitted with hearing aid in an age-matched target population of 270 726 persons in Uusimaa County including Helsinki. The age of...

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Bibliographic Details
Published in:International journal of pediatric otorhinolaryngology 1996, Vol.34 (1), p.45-51
Main Authors: Marttila, Timo I., Karikoski, Jukka O.
Format: Article
Language:English
Subjects:
Adolescent
Age Distribution
Age of Onset
Audiometry
Audiometry - methods
Auditory Threshold
Behavioural
Biological and medical sciences
Brainstem electric response
Case-Control Studies
Child
Child, Preschool
Childhood hearing impairment
Children
Detection
Ear, auditive nerve, cochleovestibular tract, facial nerve: diseases, semeiology
Female
Finland - epidemiology
Hearing aid
Hearing Aids
Hearing Disorders - diagnosis
Hearing Disorders - epidemiology
Hearing Disorders - physiopathology
Humans
Identification
Incidence
Infant
Infant, Newborn
Linear Models
Male
Mass Screening
Medical sciences
Non tumoral diseases
Otorhinolaryngology. Stomatology
Probability
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Summary:The purpose was to report the identification age of the hard-of-hearing children born between 1 January 1973 and 31 December 1990. The subjects comprised all children (353) fitted with hearing aid in an age-matched target population of 270 726 persons in Uusimaa County including Helsinki. The age of identification was studied in three groups: pure tone average (0.5, 1 and 2 kHz) ≥ 30 dB, ≥ 35 dB and ≥ 50 dB HL enabling comparison with the identification ages reported in the literature. In the first group the median identification age was 3.6 years (mean 4.2), in the second 2.9 years (mean 3.8) and in the third 2.1 years (mean 2.8). The first group was identified significantly later than the third one ( P = 0.004). The second group differed from the third significantly in detection age as well ( P = 0.004). The severity of hearing impairment correlated highly with the detection age ( r = − 0.69, P < 0.0001). The data clustered at the ages of 1–2.5 years (hearing level 90–120 dB) and at 4–8 years (30–60 dB).
ISSN:0165-5876
1872-8464
DOI:10.1016/0165-5876(95)01238-9