title: Change in prevalence of hearing loss in US adolescents.
abstract: BACKGROUND
  Hearing loss is common and, in young persons, can compromise social development, communication skills, and educational achievement.
  
  
  OBJECTIVE
  To examine the current prevalence of hearing loss in US adolescents and determine whether it has changed over time.
  
  
  METHODS
  Cross-sectional analyses of US representative demographic and audiometric data from the 1988 through 1994 and 2005 through 2006 time periods.
  
  
  METHODS
  The Third National Health and Nutrition Examination Survey (NHANES III), 1988-1994, and NHANES 2005-2006.
  
  
  METHODS
  NHANES III examined 2928 participants and NHANES 2005-2006 examined 1771 participants, aged 12 to 19 years.
  
  
  METHODS
  We calculated the prevalence of hearing loss in participants aged 12 to 19 years after accounting for the complex survey design. Audiometrically determined hearing loss was categorized as either unilateral or bilateral for low frequency (0.5, 1, and 2 kHz) or high frequency (3, 4, 6, and 8 kHz), and as slight loss (> 15 to < 25 dB) or mild or greater loss (> or = 25 dB) according to hearing sensitivity in the worse ear. The prevalence of hearing loss from NHANES 2005-2006 was compared with the prevalence from NHANES III (1988-1994). We also examined the cross-sectional relations between several potential risk factors and hearing loss. Logistic regression was used to calculate multivariate adjusted odds ratios (ORs) and 95% confidence intervals (CIs).
  
  
  RESULTS
  The prevalence of any hearing loss increased significantly from 14.9% (95% CI, 13.0%-16.9%) in 1988-1994 to 19.5% (95% CI, 15.2%-23.8%) in 2005-2006 (P = .02). In 2005-2006, hearing loss was more commonly unilateral (prevalence, 14.0%; 95% CI, 10.4%-17.6%, vs 11.1%; 95% CI, 9.5%-12.8% in 1988-1994; P = .005) and involved the high frequencies (prevalence, 16.4%; 95% CI, 13.2%-19.7%, vs 12.8%; 95% CI, 11.1%-14.5% in 1988-1994; P = .02). Individuals from families below the federal poverty threshold (prevalence, 23.6%; 95% CI, 18.5%-28.7%) had significantly higher odds of hearing loss (multivariate adjusted OR, 1.60; 95% CI, 1.10-2.32) than those above the threshold (prevalence, 18.4%; 95% CI, 13.6%-23.2%).
  
  
  CONCLUSIONS
  The prevalence of hearing loss among a sample of US adolescents aged 12 to 19 years was greater in 2005-2006 compared with 1988-1994.
authors: Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02115, USA. josef_shargorodsky@meei.harvard.edu
authors: Josef
authors: J
authors: Shargorodsky
authors: Sharon G
authors: SG
authors: Curhan
authors: Gary C
authors: GC
authors: Curhan
authors: Roland
authors: R
authors: Eavey
mesh_terms: D000293:Adolescent; D000328:Adult; D001299:Audiometry; D002648:Child; D003430:Cross-Sectional Studies; D016208:Databases, Factual / Q000706:statistics & numerical data; D005260:Female; D034381:Hearing Loss / Q000145:classification / Q000453:epidemiology*; D006801:Humans; D008297:Male; D009622:Noise / Q000009:adverse effects; D009749:Nutrition Surveys; D015995:Prevalence; D012307:Risk Factors; D014481:United States; D055815:Young Adult