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Original Article

Self-reported outcome in new hearing aid users over a 24-week post-fitting period

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Pages 555-562 | Received 22 Sep 2003, Accepted 08 Mar 2004, Published online: 04 Feb 2013
 

Abstract

Evidence for the existence of auditory acclimatization is mixed, and the implications for clinical practice are unclear. The aim of this study was to seek evidence of perceived changes in performance over a 24-week post-fitting period. Thirty-two new, elderly subjects were recruited and fitted monaurally with the same model of linear, programmable hearing aid that provided in excess of 20-dB insertion gain at 2000–4000 Hz. The Glasgow Hearing Aid Benefit Profile (GHABP) was used to measure self-reported changes over time. The questions concerning benefit and satisfaction were modified to produce two versions: half of the subjects reported changes relative to the time of fitting, while the remainder reported changes relative to the previous occasion on which they completed the GHABP (3 weeks earlier). Subjects reported using hearing aids in excess of 90% of the time when in listening situations that cause difficulty. The median residual disability measure from the GHABP remained low (10–20%) over the duration of the study. The median scores for additional benefit and satisfaction showed a small but statistically significant improvement over the first 3 months of hearing aid use but only for the subjects who referenced this to their perceived performance 3 weeks earlier. The limited evidence for self-reported improvements in benefit and satisfaction over time reported to date must be tempered by the possibility of response bias arising from the method used to measure changes over time.

Sumario

La evidencia de la existencia de la habituación auditiva es confusa y sus implicaciones en la práctica clínica no son claras. El objetico de este estudio fue buscar evidencia de cambios percibidos en el desempeño, 24 semanas después de la adaptación de un auxiliar auditivo. Se reclutó un grupo de 32 adultos mayores, nuevos usuarios, a los que se les adaptó monoauralmente con el mismo modelo de auxiliar auditivo lineal programable que proporcionaba una ganancia de inserción de 20dB en 2000-4000 Hz. Se Utilizó la Escala de Beneficio con Auxiliar Auditivo de Glasgow (GHABP) para medir la auto-evaluación de los cambios en el tiempo. Se modificaron las preguntas concernientes al beneficio y la satisfacción para producir dos versiones: la mitad de los sujetos reportaron cambios relativos al tiempo de la adaptación y los demás reportaron los cambios con respecto a su último reporte en el GHABP se mantuvo baja (10–20%) dio de beneficio adicional y satisfacción mostraron una pequeña pero significativa mejoría durante los tres primeros meses de uso del auxiliar auditivo, pero sólo en el grupo que había hecho referencia a esto tres semanas antes. La limitada evidencia de mejoría auto-reportada, en beneficio y satisfacción debe ser atenuada por la posibilidad de sesgo en la respuesta al método utilizado para medir los cambiosa en el tiempo.

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