Hearing loss is associated with decreased nonverbal intelligence in rural Nepal.

Mark McIntosh,'s picture
PubMed URL: 
http://www.ncbi.nlm.nih.gov/pubmed/25299832
Author: 
West KP Jr
Author List: 
Emmett SD
Schmitz J
Pillion J
Wu L
Khatry SK
Karna SL
LeClerq SC
West KP Jr
Journal: 
Otol Neurotol
PubMed ID: 
25299832
Pagination: 
86-92
Volume: 
36
Issue: 
1
Abstract: 
To evaluate the association between adolescent and young-adult hearing loss and nonverbal intelligence in rural Nepal.Cross-sectional assessment of hearing loss among a population cohort of adolescents and young adults.Sarlahi District, southern Nepal.Seven hundred sixty-four individuals aged 14 to 23 years.Evaluation of hearing loss, defined by World Health Organization criteria of pure-tone average greater than 25 decibels (0.5, 1, 2, 4 kHz), unilaterally and bilaterally.Nonverbal intelligence, as measured by the Test of Nonverbal Intelligence, 3rd Edition standardized score (mean, 100; standard deviation, 15).Nonverbal intelligence scores differed between participants with normal hearing and those with bilateral (p = 0.04) but not unilateral (p = 0.74) hearing loss. Demographic and socioeconomic factors including male sex; higher caste; literacy; education level; occupation reported as student; and ownership of a bicycle, watch, and latrine were strongly associated with higher nonverbal intelligence scores (all p < 0.001). Subjects with bilateral hearing loss scored an average of 3.16 points lower (95% confidence interval, -5.56 to -0.75; p = 0.01) than subjects with normal hearing after controlling for socioeconomic factors. There was no difference in nonverbal intelligence score based on unilateral hearing loss (0.97; 95% confidence interval, -1.67 to 3.61; p = 0.47).Nonverbal intelligence is adversely affected by bilateral hearing loss even at mild hearing loss levels. Socio economic well-being appears compromised in individuals with lower nonverbal intelligence test scores.
Published Date: 
January, 2015

Bradley L. Schlaggar, M.D., Ph.D., Named President and CEO of Kennedy Krieger Institute

We’re thrilled to welcome Bradley L. Schlaggar, M.D., Ph.D., to the Kennedy Krieger family as our next President and CEO.

Learn more.

Appointments & Referrals

FIND A SPECIALIST

Publications

Read inspiring stories, news and updates about the Institute's patient care, research, special education, professional training, and community programs.

 

Resource Finder

 

A free resource that provides access to information and support for individuals and families living with developmental disabilities.