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Updated: Aug 30, 2026

Behavioral Assessment of Hearing in 2 to 4 Year-old Children: A Two-interval, Observer-based Procedure Using Conditioned Play-based Responses
Published on: January 23, 2017
Infants tested for hearing loss--United States, 1999-2001
Insights
Early Hearing Detection and Intervention (EHDI) programs identify infant hearing loss sooner, improving developmental outcomes. EHDI surveillance systems show increased newborn screenings and early intervention enrollment.
Area of Science:
- Pediatrics
- Public Health
- Audiology
Background:
- Hearing loss (HL) affects 1-3 in 1,000 newborns, potentially causing developmental delays.
- Delayed identification of HL, often past age 1.5-3.0 years without intervention, hinders language acquisition during critical periods.
Purpose of the Study:
- To analyze trends in newborn hearing screening and early intervention using Early Hearing Detection and Intervention (EHDI) surveillance data.
- To assess the impact of EHDI programs on the timeliness of identification and services for infants with hearing loss.
Main Methods:
- Analysis of EHDI surveillance data from 1999-2001, including newborn hearing screening, diagnostic evaluations, and early intervention enrollment.
- Data collected from 48 states/areas with EHDI tracking and surveillance systems.
Main Results:
- Significant increases observed from 1999-2001 in the number of infants screened for HL.
- Higher rates of diagnostic audiologic evaluations and enrollment in early intervention services for infants identified with HL in 2001 compared to previous years.
- Demonstrated growth in EHDI program reach and effectiveness.
Conclusions:
- EHDI programs and surveillance systems are crucial for early identification and intervention of infant hearing loss.
- Continued development of EHDI surveillance is essential to support timely services for children with HL.
- Strengthening EHDI infrastructure enhances developmental support for infants with hearing loss.
Abstract:
Hearing loss (HL) occurs in one to three of 1,000 live births annually and, when left undetected, can result in developmental delays. To promote communication from birth, Early Hearing Detection and Intervention (EHDI) programs support early identification of infants with HL. Without EHDI programs, the average age of identification for HL is age 1.5-3.0 years, which is past the start of the critical period for optimal language acquisition. In 2001, a total of 48 states/areas with EHDI tracking and surveillance systems (30 funded by CDC) reported the percentage of newborns screened for HL. This report summarizes the results of an analysis of surveillance data for 1999-2001, which indicate that more infants were screened for HL, received diagnostic audiologic evaluations, and were enrolled in early intervention services in 2001 than in 1999 and 2000. Continued development of EHDI surveillance systems should assist states/areas in providing needed services to children with HL.
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