Pilot Study: The Effectiveness of Computerized Auditory Training Programme on Children With Auditory Processing Disorder
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Central Auditory Processing Disorder
- Sponsor
- National University Health System, Singapore
- Enrollment
- 39
- Locations
- 1
- Primary Endpoint
- Change from baseline in auditory processing skills at 3 months
- Status
- Completed
- Last Updated
- 12 years ago
Overview
Brief Summary
The current study aimed to examine the effectiveness of a Computer-based auditory training (CBAT) intervention for children with Central Auditory Processing Disorder (CAPD) by comparing the changes in auditory processing (AP) and functional listening skills of these children immediately post-intervention, to that of the untrained controls. The AP skills of the trained group were evaluated again at 3 months post-intervention to examine the sustainability of any improvements made from the CBAT intervention. I hypothesised that after intervention, children from the auditory training (AT) group would improve in their AP skills, and that improvement would be greater than the changes in AP skills of those untrained controls. I also hypothesised that the improvement made from the intervention would sustain for at least 3 months after the end of intervention. Finally, I examined if the training outcomes are predictable from any underlying factors such as the initial AP, language, or cognitive skills of these children.
Detailed Description
This prospective study incorporated a parallel group design that randomly assigned participants identified with CAPD to an auditory training (AT) group or a no intervention (Control) group. Both groups were matched for age and gender. Baseline measures were conducted prior to the randomisation process. Participants from the AT group were given a 3-month home therapy using a CBAT programme developed for this study, while participants from the control group received no intervention for the same period of time. Apart from regular school attendance and activities, all participants were requested to discontinue any other auditory-based interventions, which might affect the outcomes of this study. All the participants were assessed again after the conclusion of the training period. After the end of the intervention, participants from the AT group were requested to undergo a no-intervention phase for a period of 3 months before another assessment. This was intended to examine the sustainability of any improvement made through the CBAT programme. An auditory test and two validated questionnaires were used as outcome measures, administered at baseline, and at post-3 months (immediately post-intervention).
Investigators
Dr. Jenny Loo
Principal Audiologist
National University Health System, Singapore
Eligibility Criteria
Inclusion Criteria
- •Presentation to the clinic with reported symptoms of listening difficulties.
- •No measurable peripheral hearing anomalies in both ears, i.e. normal cochlea and middle ear function, as judged by normal audiometric thresholds of 20dB HL or better in the speech frequency range of 250-8000 Hz, and normal impedance audiometry.
- •Performance on the behavioural AP test battery (Table 6.1) which met the following criteria:
- •At least two abnormalities in the non-speech or minimally-linguistic loaded tasks.
- •No indication of any other underlying higher order cognitive problems as judged by abnormal performance scores in all the tasks in AP test battery.
- •Normal intelligence, as judged by having a nonverbal IQ score of more than 85 (Test of Nonverbal Intelligence, TONI).
Exclusion Criteria
- •one with medical or developmental conditions, i.e. epilepsy, global developmental delay, pervasive learning disorder such as autism, which may additionally impact on auditory or cognitive performance.
Outcomes
Primary Outcomes
Change from baseline in auditory processing skills at 3 months
Time Frame: baseline, and post-3 months
The auditory processing skills of patients were assessed using the LiSN-S. The LiSN-S is an auditory task that assesses the ability of children to understand speech in the background of two other talkers. The LiSN-S test was administered using a laptop with a circumaural headphones connected to the computer. The target sentences were presented at an initial level of 62 dB SPL, whereas the distracter stories were presented at a constant level of 55 dB SPL. The target stimuli and distracter discourse were presented to both ears simultaneously. A maximum of 30 sentences were presented in each of the four listening conditions. The patient was required to repeat the targeted sentences verbally in every listening condition and correct responses were scored manually by the me on the computer. The stimulus presentation level was adjusted adaptively depending on the patient's response. The assessment took approximately 20 minutes to complete.
Secondary Outcomes
- Change from baseline in listening skills at 3 months(Baseline, and post-3 months)