Cost analysis of TEOAE-based universal newborn hearing screening

What Contribution Did Economic Evidence Make to the Adoption of Universal Newborn Hearing Screening Policies in the United States?

Universal newborn hearing screening (UNHS), when accompanied by timely access to intervention services, can improve language outcomes for children born deaf or hard of hearing (D/HH) and result in economic benefits to society. Early Hearing Detection and Intervention (EHDI) programs promote UNHS and using information systems support access to follow-up diagnostic and early intervention services so that infants can be screened no later than 1 month of age, with those who do not pass their screen receiving diagnostic evaluation no later than 3 months of age, and those with diagnosed hearing loss receiving intervention services no later than 6 months of age. In this paper, we first document the rapid roll-out of UNHS/EHDI policies and programs at the national and state/territorial levels in the United States between 1997 and 2005. We then review cost analyses and economic arguments that were made in advancing those policies in the United States. Finally, we examine evidence on language and educational outcomes that pertain to the economic benefits of UNHS/EHDI. In conclusion, although formal cost-effectiveness analyses do not appear to have played a decisive role, informal economic assessments of costs and benefits appear to have contributed to the adoption of UNHS policies in the United States.

The universal newborn hearing screening in Brazil: from identification to intervention

OBJECTIVE

The objective of the study is to investigate the results of the newborn hearing screening program carried out in a Public Hospital in Brazil, in the first 3 years regarding: (1) the prevalence of hearing impairment; (2) the influence of the universal hearing screening program on the age at which the diagnosis of hearing loss is defined; (3) the cost effectiveness of the program; (4) the outcomes, in terms of the age in which the hearing rehabilitation started.

METHODS

A descriptive study of the first 3 years after starting the universal newborn hearing screening in a Public Hospital of Bauru, São Paulo state, Brazil. The screening method consists of a two-stage screening approach with transient otoacoustic emissions (TOAE), conducted by an audiologist. If the outcome in the second-stage screening is REFER, the infant is submitted to diagnostic follow-up testing and intervention at the Audiology and Speech Pathology Clinic at the University of São Paulo, campus of Bauru. The evaluation of the costs of the universal newborn hearing screening program per each screened newborn (around 4000/year) was done based on a proposal by the National Center for Hearing Assessment and Management, of the Utah State University, United States of America.

RESULTS

11,466 newborns were submitted to hearing screening, corresponding to 90.52% of the living newborns. The prevalence of sensorineural hearing loss was 0.96:1000. Of the 11 children with sensorineural hearing loss, eight children received hearing aids and five started the therapeutic process before the age of 1. Currently, four children between the ages of 11 months and 2 years old were submitted to cochlear implant surgery. The cost of hearing screening was US$7.00 and the annual cost of the universal newborn hearing screening program was US$26,940.47.

CONCLUSION

The hospital-based universal newborn hearing screening carried out through the Brazilian National Health System is viable, with promising results. However, in a country such as Brazil, which presents large socio-economic differences, the same type of analyses should be performed in several regions, so as to take into account specific aspects, to implement the newborn hearing screening along with the Public System.

The universal newborn hearing screening program at the University Hospital of Ferrara: focus on costs and software solutions

In the present paper, the authors report the results of the Universal Newborn Hearing Screening (UNHS) project at the University Hospital of Ferrara. A total of 6,759 full-term newborns and a total of 1,016 NICU babies were tested at the University Hospital of Ferrara, from January 2000 to December 2006. The paper presents information from clinically acceptable screening procedures developed and tested during the 6 years of the program and addresses two questions pertinent to hearing screening: (i) the cost-estimate of a UNHS program based on European economical and administration premises and (ii) the development of a database-structure for the evaluation of the UNHS/NHS performance and the individual patient tracking.

Primary care physicians' knowledge, attitudes, and practices related to newborn hearing screening

OBJECTIVE

Universal newborn hearing screening focuses on providing the earliest possible diagnosis for infants with permanent hearing loss. The goal is to prevent or minimize the consequences of sensorineural hearing loss on speech and language development through timely and effective diagnosis and interventions. Pediatricians are in a key position to educate families about the importance of follow-up, if they are well informed. The objective of this study was to survey the attitudes, practices, and knowledge of primary care physicians in relation to newborn hearing screening and follow-up.

METHODS

A survey was created on the basis of input from focus groups with primary care physicians. Surveys (n = 12,211) were sent to primary care physicians in 21 states and 1 territory (Puerto Rico) regarding practices, knowledge, and attitudes related to universal newborn hearing screening. The response rate was 16.1% (n = 1968).

RESULTS

Physicians reported a high level of support for universal newborn hearing screening; 81.6% judged it to be very important to screen all newborns for hearing loss at birth. Although physicians reported confidence in talking with parents about screening results, they indicated a lack of confidence in discussing follow-up procedures and intervention needs. Several important gaps in knowledge were identified, and these represent priorities for education, as based on their relevance to medical management and parent support. Physicians expressed a strong preference for action-oriented resources.

CONCLUSION

Pediatricians and other primary care providers recognize the benefits of early detection and intervention for permanent hearing loss in infants. The current system of newborn hearing screening can be enhanced by strengthening the medical community's involvement in the process from screening to follow-up. Physician roles will be supported through the provision of action-oriented resources that educate parents about the importance of follow-up and that prepare professionals to incorporate appropriate surveillance procedures in daily practice.

Beyond efficacy and effectiveness: conducting economic analyses during clinical trials

Few studies have examined cost issues in the field of dysphagia. This study presents cost data collected during a clinical trial in speech-language pathology, demonstrating the types of cost analyses that can be conducted and highlighting obstacles and issues facing investigators who seek to conduct economic analyses in this arena. Seventy-nine patients were enrolled in the clinical trial to assess the impact of a swallowing intervention on swallowing and speech function. The patients were at least one year past treatment for head and neck cancer. No significant intervention differences were detected in these outcomes. A companion economic analysis was conducted in 37 of these patients using patient diaries and followup with identified health care providers. Analyses indicated that (1) the intervention did not significantly reduce health care expenditures; (2) indirect costs and costs of hospitalizations are both important factors to consider during a trial; and (3) health care costs of this population are high relative to the rest of the U.S. population. Attrition from the overall study population can pose a serious threat to the viability of an economic study. The article concludes with a discussion of how these issues can be addressed in future studies.

A Two-stage bipodal screening model for universal neonatal hearing screening

OBJECTIVE

A model is proposed for universal neonatal hearing screening.

METHODS

The screening model is two-staged because it consists of a first test and, in case of failure (1.4% of the subjects), of a retest 3 weeks later. It is bipodal because it involves both the hospital audiologic department and a central Well Baby Organization. The idea is to have a maximal number of newborns tested at the maternity by trained audiologists and to have the Well Baby Organization trace and chase the missing subjects. The model has been evaluated during 1 calendar year (1999) in a maternity with 2,012 newborns.

RESULT

The result is a coverage of 99.3%. Most newborns (97.3%) were tested at the maternity ward with a total time investment of less than 15 minutes per child. The actual test time is 2 minutes, 12 seconds (median value). The Well Baby Organization keeps track of all the results and has to test no more than 2% of the newborns. Sensitivity and specificity were not the primary outcomes of this evaluation, but they were similar to those of a previous study evaluating the screen procedure on a larger scale, giving a sensitivity of approximately 100% and a false alarm rate of 1/1,000.

CONCLUSION

These figures demonstrate that universal neonatal hearing screening is feasible within the existing health care structure, with unprecedented coverage, sensitivity, and specificity.

Comparison of costs and referral rates of 3 universal newborn hearing screening protocols

OBJECTIVE

To investigate the costs and referral rates of 3 universal newborn hearing screening programs: transient evoked otoacoustic emissions (TEOAE), automated auditory brainstem response (AABR), and a combination, two-step protocol in which TEOAE and AABR are used.

STUDY DESIGN

Clinical outcomes (referral rates) from 12,081 newborns at 5 sites were obtained by retrospective analysis. Prospective activity-based costing techniques (n = 1056) in conjunction with cost assumptions were used to analyze the costs based on an assumed annual birth rate of 1500 births.

RESULTS

Referral rates differed significantly among the 3 screening protocols (AABR, 3.21%; two-step, 4.67%; TEOAE, 6.49%; P <.01), with AABR achieving the best referral rate at discharge. Although AABR had the lowest referral rate at discharge and the highest pre-discharge costs, the total pre- and post-discharge costs per infant screened (AABR, $32.81; two-step, $33.05; TEOAE, $28.69) and costs per identified child (AABR, $16,405; two-step, $16,527; TEOAE, $14,347) were similar among programs.

CONCLUSION

Although AABR incurs higher costs during pre-discharge screening, it has lower referral rates than either the TEOAE or two-step program. As a result, the total costs of newborn hearing screening and diagnosis are similar among the 3 methods studied.

Cost and cost-effectiveness of universal screening for hearing loss in newborns

OBJECTIVE

To estimate the cost and cost-effectiveness of universal newborn hearing screening.

STUDY DESIGN AND SETTING

Decision analysis model utilizing the hospital perspective. This model evaluated 4 distinct protocols for screening a fixed and defined hypothetical cohort of newborn infants.

OUTCOME MEASURES

Cost of screening and the number of infants with hearing loss identified through universal screening.

RESULTS

Otoacoustic emissions testing at birth followed by repeat testing at follow up demonstrated the lowest cost ($13 per infant) and had the lowest cost-effectiveness ratio ($5100 per infant with hearing loss identified). Screening auditory brainstem evoked response testing at birth with no screening test at follow-up was the only protocol with greater effectiveness, but it also demonstrated the highest cost ($25 per infant) and highest cost-effectiveness ratio ($9500 per infant with hearing loss identified). These findings were robust to sensitivity analysis, including best-case and worst-case estimation. The prevalence of hearing loss and the fraction of infants returned for follow-up testing had a large impact on the absolute level, but not relative level of protocol cost and cost-effectiveness.

CONCLUSION

The otoacoustic emissions testing protocol should be selected by screening programs concerned with cost and cost-effectiveness, although there are certain caveats to consider.

SIGNIFICANCE

The most significant barriers to implementation of universal newborn hearing screening programs have been financial, and this study compares the most common protocols currently in use. This study can assist program directors not only in the decision to initiate universal screening but also in their choice of screening protocol.

How do we identify hearing impairment in early childhood?

This review discusses the need for universal neonatal hearing screening. Historical background is given concerning conventional childhood hearing screening programmes in western countries. Direct studies on the effects of very early habilitation programmes on speech and language development are cited. Measurement of otoacoustic emissions (OAE) as a tool for neonatal hearing screening is presented. The state of neonatal hearing screening programmes in the US and in Europe, particularly in Sweden, is discussed.

Universal newborn hearing screening in an inner-city, managed care environment

OBJECTIVES/HYPOTHESIS

Universal neonatal hearing screening (UNHS) programs aim to identify and treat educationally significant hearing loss in the first months of life. Several states have mandated UNHS for all newborns. Such programs have been successful in small, homogeneous populations. As larger states attempt to implement such programs, important obstacles have arisen, particularly in sparsely populated rural environments and in the inner city, where poverty, unstable living situations, and inadequate access to health care make follow-up of infants failing initial testing difficult.

STUDY DESIGN

We performed a prospective longitudinal study examining the effects of increasingly complex and expensive interventions designed to ensure that children failing initial hearing screening returned for complete evaluation and habilitation.

METHODS

A UNHS program based on transient evoked otoacoustic emissions testing was implemented at Temple University Hospital, with 2,000 births per year. At 6 months into the program, efficacy was assessed and modifications in follow-up methodology were made in an attempt to improved rate of return of infants failing newborn screening. The effect of these interventions was reassessed 6 months later.

RESULTS

In its first 12 months, the Temple University Infant and Young Child Hearing Intervention Initiative successfully screened 95% (2,031) of all newborns using transient evoked otoacoustic emissions. Collecting a complete database profile for each newborn, establishing rapport with the family, and offering immediate follow-up appointments yielded a 61% return rate after discharge. The addition of a dedicated project secretary, free day-care for siblings, and cab vouchers for transportation and the elimination of a requirement for health maintenance organization referrals increased follow-up yield to 75%.

CONCLUSION

Given adequate resources and planning, UNHS can be successful, even in economically depressed environments.