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BMC Pediatrics
Published in: BMC Pediatrics 1/2013

Open Access 01-12-2013 | Research article

Longitudinal analysis of ear infection and hearing impairment: findings from 6-year prospective cohorts of Australian children

Authors: Vasoontara Yiengprugsawan, Anthony Hogan, Lyndall Strazdins

Published in: BMC Pediatrics | Issue 1/2013

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Abstract

Background

Middle ear infection is common in childhood. Despite its prevalence, there is little longitudinal evidence about the impact of ear infection, particularly its association to hearing loss. By using 6-year prospective data, we investigate the onset and impact over time of ear infection in Australian children.

Methods

We analyse 4 waves of the Longitudinal Study of Australian Children (LSAC) survey collected in 2004, 2006, 2008, and 2010. There are two age cohorts in this study (B cohort aged 0/1 to 6/7 years N=4242 and K cohort aged 4/5 to 10/11 years N=4169). Exposure was parent-reported ear infection and outcome was parent-reported hearing problems. We modelled ear infection onset and subsequent impact on hearing using multivariate logistic regressions, reporting Adjusted Odds Ratios (AOR) and Confidence Intervals (95% CI). Separate analyses were reported for indigenous and non-indigenous children.

Results

Associations of ear infections between waves were found to be very strong both among both indigenous and non-indigenous children in the two cohorts. Reported ear infections at earlier wave were also associated with hearing problems in subsequent wave. For example, reported ear infections at age 4/5 years among the K cohort were found to be predictors of hearing problems at age 8/9 years (AOR 4.0, 95% CI 2.2-7.3 among non-indigenous children and AOR 7.7 95% CI 1.0-59.4 among indigenous children). Number of repeated ear infections during the 6-year follow-up revealed strong dose–response relationships with subsequent hearing problems among non-indigenous children (AORs ranged from 4.4 to 31.7 in the B cohort and 4.4 to 51.0 in the K cohort) but not statistically significant among indigenous children partly due to small sample.

Conclusions

This study revealed the longitudinal impact of ear infections on hearing problems in both indigenous and non-indigenous children. These findings highlight the need for special attention and follow-up on children with repeated ear infections.
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Metadata
Title
Longitudinal analysis of ear infection and hearing impairment: findings from 6-year prospective cohorts of Australian children
Authors
Vasoontara Yiengprugsawan
Anthony Hogan
Lyndall Strazdins
Publication date
01-12-2013
Publisher
BioMed Central
Published in
BMC Pediatrics / Issue 1/2013
Electronic ISSN: 1471-2431
DOI
https://doi.org/10.1186/1471-2431-13-28

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