PMID- 9105438
OWN - NLM
STAT- MEDLINE
DCOM- 19970703
LR  - 20190716
IS  - 0001-6489 (Print)
IS  - 0001-6489 (Linking)
VI  - 117
IP  - 2
DP  - 1997 Mar
TI  - Profound permanent hearing impairment in childhood: causative factors in two 
      European countries.
PG  - 158-60
AB  - A collaboration between Denmark and Wales was established in order to evaluate 
      any differences between countries in factors causing permanent childhood hearing 
      impairment (PCHI). Two identical 6-year birth-cohorts from 1975-1980 suffering 
      from a permanent hearing loss > or = 90 dB HL in the better hearing ear, averaged 
      across 0.5-4 kHz (BEHL), were included in the analysis. The overall estimated 
      prevalence of children with this loss was 0.41/live births in Wales (n = 59). In 
      Denmark the overall prevalence was 0.45/1,000 live births (n = 34), there being 
      no significant differences in prevalence between the two countries. Both cohorts 
      were subjected to a multidisciplinary investigation protocol. No significant 
      differences were found between countries in the proportion of hearing impairment 
      caused by the various factors, when based on uniform criteria and identical 
      birth-cohorts. The proportion of inherited hearing loss is 47-50% in the two 
      countries. Within inheritance the proportion of non-syndromal/syndromal 
      inheritance differs slightly, as non-syndromal inheritance comprises 50% in 
      Wales, and 76% in Denmark. The reported proportion of 16-34% of unknown factors 
      causing profound PCHI emphasises the need for appropriate protocols for 
      aetiological evaluation.
FAU - Parving, A
AU  - Parving A
AD  - Audiological Department, Bispebjerg Hospital H:S, Copenhagen, Denmark. 
      bbhaudap@login.dknct.dk
FAU - Stephens, D
AU  - Stephens D
LA  - eng
PT  - Journal Article
PL  - England
TA  - Acta Otolaryngol
JT  - Acta oto-laryngologica
JID - 0370354
SB  - IM
MH  - Child
MH  - Cohort Studies
MH  - Deafness/epidemiology/*etiology
MH  - Denmark/epidemiology
MH  - Humans
MH  - Prevalence
MH  - Wales/epidemiology
EDAT- 1997/03/01 00:00
MHDA- 1997/03/01 00:01
CRDT- 1997/03/01 00:00
PHST- 1997/03/01 00:00 [pubmed]
PHST- 1997/03/01 00:01 [medline]
PHST- 1997/03/01 00:00 [entrez]
AID - 10.3109/00016489709117759 [doi]
PST - ppublish
SO  - Acta Otolaryngol. 1997 Mar;117(2):158-60. doi: 10.3109/00016489709117759.