Question
Is the DSL fitting strategy still the preferred strategy for fitting children?
Answer
With the number of Early Hearing Detection and Intervention (EHDI) programs increasing worldwide, the question of the preferred selection and fitting strategy for infants and children is an important one. Many EHDI programs rely on evidence-based practice when describing the specific practices for their program. In fact, because the DSL Method has a considerable research base, the Infant Hearing Program in the province of Ontario has mandated that it be used for the selection and fitting of amplification for infants and children involved in this program. In addition, the DSL Method is used by over 850 clinicians in 31 countries worldwide and the algorithm is included in the software systems of 16 hearing aid manufacturers and 6 hearing aid analyzer systems.
Besides the DSL Method, there are other prescriptive procedures that offer pediatric-specific features. The National Acoustic Laboratories has developed NAL-NL1 software which is also used when fitting hearing aids in children. Although validation research has shown that the DSL Method is a successful strategy for the selection and fitting of linear and non-linear amplification for children, there is currently no evidence supporting the use of one fitting strategy over another. Currently, a collaborative study is underway to determine the relative benefits derived from DSL [i/o] and NAL-NL1 in fitting children with amplification.
Where would I obtain the DSL software program?
You can obtain DSL v4.1 software, and other DSL-related information, directly from the National Centre for Audiology at the University of Western Ontario in London, Ontario, Canada by phoning (519) 661-3901 or e-mailing dsl@nca.uwo.ca. You can also order the software through our website at www.dslio.com or download an order form and fax it to us at (519) 661-3805. The cost for the software is $75.00 plus shipping.
Marlene Bagatto, M.Cl.Sc., Aud(C)
Ms. Bagatto is a Research Audiologist at the National Centre for Audiology. Her research has focused on the behavioral validation of the DSL Method when used with adults. Marlene is also the technical support person for clinicians who use the DSL Method. She uses her clinical and laboratory experience of DSL to teach workshops in various places in North America.
