Development and evaluation of the Digit Triplet Test in Swahili language
South African Journal of Communication Disorders
| Field | Value | |
| Title | Development and evaluation of the Digit Triplet Test in Swahili language | |
| Creator | Rosendahl, Bjørn G. Tronstad, Tron V. Øygarden, Jon | |
| Description | Background: The development of a Digit Triplet Test in the Swahili language is an essential step towards providing accurate hearing assessment for Swahili-speaking populations.Objectives: This study aimed to develop a Digit Triplet Test in Swahili through a two-part procedure consisting of an optimisation phase and an evaluation phase using normal hearing participants.Method: A total of 34 subjects participated in the study. During the optimisation phase, a psychometric intelligibility function was determined for each recorded digit, allowing for volume adjustments to standardise the threshold across all digits. This resulted in a lower threshold and a steeper psychometric function for both the triplets and the test lists. Using the optimised speech material, four test lists were created, each containing 27 triplets composed of digits between 1 and 9. The finalised material was then evaluated.Results: In the final version, the mean Speech Reception Threshold (SRT) for the participants was −8.9 ± 0.6 dB Signal-to-Noise Ratio (SNR), and the mean slope was 24.7 ± 3.5%/dB using triplet scoring.Conclusion: The psychometric function for normal listeners shows a steep slope with little variation between subjects and across test lists.Contribution: The test results are comparable to those of Digit Triplet Tests developed in other languages, indicating the effectiveness and reliability of the Swahili Digit Triplet Test for hearing assessments. | |
| Publisher | AOSIS | |
| Date | 2025-02-21 | |
| Identifier | 10.4102/sajcd.v72i1.1090 | |
| Source | South African Journal of Communication Disorders; Vol 72, No 1 (2025); 6 pages 2225-4765 0379-8046 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://sajcd.org.za/index.php/sajcd/article/view/1090/2427
https://sajcd.org.za/index.php/sajcd/article/view/1090/2428
https://sajcd.org.za/index.php/sajcd/article/view/1090/2429
https://sajcd.org.za/index.php/sajcd/article/view/1090/2430
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