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JOURNAL ARTICLE
MULTICENTER STUDY
RESEARCH SUPPORT, N.I.H., EXTRAMURAL
Hearing impairment and poverty: the epidemiology of ear disease in Peruvian schoolchildren.
Otolaryngology - Head and Neck Surgery 2010 Februrary
OBJECTIVES: 1) To measure prevalence of hearing impairment (HI) in schoolchildren living in poverty in Peru. 2) To identify risk factors for HI and assess its impact on academic performance.
STUDY DESIGN: Cross-sectional.
SETTING: Elementary schools in an asentimiento humano (shantytown) near Lima, Peru, October 2008 to March 2009.
SUBJECTS: Schoolchildren (n = 335), ages six to 19 years.
METHODS: Audiological health was assessed with pure-tone audiometry, tympanometry, and otoscopy. The primary outcome was HI, defined as average threshold >25 dB HL for 0.5, 1, 2, and 4 kHz, in one or both ears (per World Health Organization/International Organization for Standardization). A questionnaire on health history was administered to parents. Statistical analysis included univariate analysis for chi(2) values and odds ratios (ORs), and multivariate logistic regression.
RESULTS: HI prevalence: 6.9 percent (95% confidence interval [CI] 4.2%-9.6%). Risk factors for HI (OR, 95% CI, P value): neonatal jaundice (5.59, 1.63-19.2, 0.015), seizure (7.31, 2.50-21.4, 0.0013), hospitalization (4.01, 1.66-9.68, 0.003), recurrent otitis media (5.06, 1.98-12.9, 0.002), past otorrhea (4.70, 1.84-12.0, 0.003), family history of HI at <35 years (2.91, 1.19-7.14, 0.026), tympanic membrane abnormality (13.8, 4.48-42.7, <0.001), cerumen impaction (15.8, 4.71-53.1, <0.001), and eustachian tube dysfunction (4.87, 1.74-13.7, <0.001). HI was an independent predictor of academic failure (3.36, 1.15-9.82, 0.03).
CONCLUSIONS: Impoverished Peruvian schoolchildren were four to seven times more likely to experience HI than children living in higher-income countries. Untreated middle ear disease in the context of limited access to pediatric care was a major risk factor for HI. Furthermore, HI was associated with worse scholastic achievement. These results support prioritization of pediatric ear health as an essential component of the global health agenda, especially in resource-poor countries.
STUDY DESIGN: Cross-sectional.
SETTING: Elementary schools in an asentimiento humano (shantytown) near Lima, Peru, October 2008 to March 2009.
SUBJECTS: Schoolchildren (n = 335), ages six to 19 years.
METHODS: Audiological health was assessed with pure-tone audiometry, tympanometry, and otoscopy. The primary outcome was HI, defined as average threshold >25 dB HL for 0.5, 1, 2, and 4 kHz, in one or both ears (per World Health Organization/International Organization for Standardization). A questionnaire on health history was administered to parents. Statistical analysis included univariate analysis for chi(2) values and odds ratios (ORs), and multivariate logistic regression.
RESULTS: HI prevalence: 6.9 percent (95% confidence interval [CI] 4.2%-9.6%). Risk factors for HI (OR, 95% CI, P value): neonatal jaundice (5.59, 1.63-19.2, 0.015), seizure (7.31, 2.50-21.4, 0.0013), hospitalization (4.01, 1.66-9.68, 0.003), recurrent otitis media (5.06, 1.98-12.9, 0.002), past otorrhea (4.70, 1.84-12.0, 0.003), family history of HI at <35 years (2.91, 1.19-7.14, 0.026), tympanic membrane abnormality (13.8, 4.48-42.7, <0.001), cerumen impaction (15.8, 4.71-53.1, <0.001), and eustachian tube dysfunction (4.87, 1.74-13.7, <0.001). HI was an independent predictor of academic failure (3.36, 1.15-9.82, 0.03).
CONCLUSIONS: Impoverished Peruvian schoolchildren were four to seven times more likely to experience HI than children living in higher-income countries. Untreated middle ear disease in the context of limited access to pediatric care was a major risk factor for HI. Furthermore, HI was associated with worse scholastic achievement. These results support prioritization of pediatric ear health as an essential component of the global health agenda, especially in resource-poor countries.
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