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Area of Science:

  • Pediatrics
  • Audiology
  • Genetics

Background:

  • Hearing loss is a common birth defect.
  • Early identification and intervention are critical for child development.
  • Risk factors for hearing loss in early childhood require further investigation.

Purpose of the Study:

  • To examine the association between risk factors and early childhood hearing status.
  • To assess audiologic care follow-up rates for children with hearing loss risk factors.

Main Methods:

  • Retrospective data review of 115,039 children born between 2010-2012.
  • Analysis of prevalence rates, odds ratios, and Fisher exact tests.
  • Categorization of hearing status: normal hearing, congenital hearing loss, delayed-onset hearing loss.

Main Results:

  • 90% of children had no risk factors; 99.9% had normal hearing by age 3.
  • Of children with risk factors (10%), 96.3% had normal hearing by age 3.
  • Congenital hearing loss affected 1.4%, permanent hearing loss 2.3% of those with risk factors.
  • Highest risk factors for congenital impairment: neurodegenerative disorders, syndromes, congenital infections.
  • Highest risk factors for permanent postnatal loss: congenital cytomegalovirus, syndromes, craniofacial anomalies.

Conclusions:

  • Specific risk factors significantly elevate the risk of congenital or permanent childhood hearing loss.
  • Prioritizing diagnostic follow-up testing for children with identified hearing loss risk factors is essential.