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Abstract
The test-retest reliability of the auditory steady-state response (ASSR) has received limited attention. Therefore, the aim was to assess the test-retest reliability of an 80-Hz multiple-ASSR system in normal-hearing subjects by a comprehensive set of statistical methods. Twenty-nine participants (15 females) aged between 18 and 30 years contributed to two sessions (test-retest), and the ASSR thresholds were determined with a descending search protocol using a 10-dB precision. The test-retest reliability was assessed by a three-layered approach which consisted of Pearson product-moment correlation, analysis of variance (ANOVA), and standard error of measurement (SEM). The correlations for ASSR thresholds ranged from poor (0.34) for 500 Hz CF to moderate (0.55) for 1000, 2000, and 4000 Hz CF. A two-way ANOVA of the difference scores (ASSR threshold minus behavioral threshold) demonstrated no significant difference between test and retest. The SEM determined the normal tolerance for clinical error of repeated thresholds and the ASSR SEM values fell well within ±10 dB HL. This investigation shows that the multiple ASSR-technique produces a clinically acceptable test-retest reliability for normal-hearing adults.
| Abbreviations | ||
| ASSR | = | Auditory steady-state response |
| MASTER | = | Multiple auditory steady-state response |
| MF | = | Modulation frequency |
| SEM | = | Standard error of measurement |
| TB-ABR | = | Tone-burst auditory brainstem response |
| UNHS | = | Universal newborn hearing screening |
| Abbreviations | ||
| ASSR | = | Auditory steady-state response |
| MASTER | = | Multiple auditory steady-state response |
| MF | = | Modulation frequency |
| SEM | = | Standard error of measurement |
| TB-ABR | = | Tone-burst auditory brainstem response |
| UNHS | = | Universal newborn hearing screening |
Sumario
La confiabilidad test/retest de la respuesta auditiva de estado estable (ASSR) ha recibido una atención limitada. Por lo tanto, el objetivo fue evaluar por medio de una serie de métodos estadísticos exhaustivos, la confiabilidad test/retest de un sistema de ASSR múltiple de 80-Hz, en sujetos con audición normal. Veintinueve participantes (15 mujeres) con edades entre los 18 y los 30 años contribuyeron con dos sesiones (test/retest), y los umbrales ASSR se determinaron con un protocolo de búsqueda descendente, usando una precisión de 10 dB. La confiabilidad test/retest fue evaluada con un enfoque de tres etapas, que consistió de una correlación producto-momento de Pearson, un análisis de varianza (ANOVA), y una medida de error estándar (SEM). Las correlaciones para los umbrales ASSR variaron desde pobre (0.34) para un CF de 500 Hz a moderado (0.55) para CF a 1000, 2000 y 4000 Hz. Un ANOVA de dos vías de las diferencias de puntajes (umbral ASSR menos umbral conductual) no demostró una diferencia significativa entre el test y el retest. El SEM determinó la tolerancia normal para el error clínico de umbrales repetidos y los valores SEM para ASSR estuvieron dentro de±10 dB HL. Esta investigación muestra que la técnica de ASSR múltiple produce una confiabilidad test/retest clínicamente aceptable para adultos con audición normal.