Related Experiment Video
Updated: Jun 20, 2026

Neonatal Murine Cochlear Explant Technique as an In Vitro Screening Tool in Hearing Research
Published on: June 8, 2017
Universal newborn hearing screening follow-up: a university clinic perspective
1Department of Speech, Language, and Hearing Sciences, Purdue University, 500 Oval Drive, West Lafayette, IN 47907, USA. krishnal@purdue.edu
Insights
This study found significant delays in diagnosing infant hearing loss and initiating early intervention services. Many infants missed critical developmental milestones for audiology and intervention, highlighting systemic challenges.
Area of Science:
- Pediatric Audiology
- Early Intervention Services
- Public Health
Background:
- The Joint Committee on Infant Hearing (JCIH) established critical timelines for infant hearing loss diagnosis and intervention.
- University clinics play a vital role in implementing these early intervention programs.
- Evaluating adherence to JCIH guidelines is crucial for optimizing infant outcomes.
Purpose of the Study:
- To assess the effectiveness of referral and follow-up procedures in a university clinic's early intervention program.
- To determine if diagnostic and intervention timelines align with JCIH (2007) recommendations.
- To identify barriers to timely diagnosis and intervention for infant hearing loss.
Main Methods:
- A retrospective chart review of 142 infants was conducted.
- Data collected included demographics, medical history, and key audiological/intervention milestones.
- Key data points: age at initial evaluation, diagnosis, hearing aid fitting, and start of early intervention.
Main Results:
- 17% of infants were over 3 months at initial evaluation; 18% were lost to follow-up.
- No infants diagnosed with hearing loss received amplification within 1 month or intervention by 6 months.
- Significant delays were observed across all critical intervention points.
Conclusions:
- The university clinic's program faces challenges in meeting JCIH (2007) targets for infant hearing loss.
- Improved communication and robust monitoring systems are essential for enhancing early intervention program efficacy.
- Systemic improvements are needed to ensure timely diagnosis and intervention for infants with hearing loss.
Purpose:
To evaluate the referral and follow-up procedures at a university clinic to determine whether the early intervention program is achieving the goals of diagnosis of hearing loss by 3 months, amplification within 1 month of diagnosis, and intervention services by 6 months, as outlined in the Joint Committee on Infant Hearing (JCIH; 2007) position statement.
Method:
Files for 142 infants were examined, and the following data were collected from each file: date of birth, birth hospital, hometown, parents' ages, ethnicity, nursery status (well baby or neonatal intensive care unit), medical history, age at initial evaluation and at diagnosis, results of evaluation(s), and age at hearing aid fitting and start of early intervention services.
Results:
Results revealed that 17% of infants were older than 3 months at the initial evaluation, and 18% of infants who needed further evaluation were lost to follow-up. None of the infants identified with hearing loss received amplification within 1 month of diagnosis or early intervention services by the age of 6 months.
Conclusions:
The findings provide further evidence of the challenges of early intervention programs as stated by the JCIH (2007), and they emphasize the importance of communication between practitioners and implementation of monitoring systems and checks and balances to improve the efficacy of early intervention programs.

