Dao Andre, Folkeard Paula, Baker Sandra, Pumford John, Scollie Susan
National Centre for Audiology, Faculty of Health Sciences, Western University, London, Ontario, Canada.
Wavefront Centre for Communication Accessibility, Vancouver, British Columbia.
J Am Acad Audiol. 2021 Feb;32(2):90-98. doi: 10.1055/s-0040-1718707. Epub 2020 Dec 9.
Matching hearing aid output levels to prescribed targets is a component of preferred practice, yet recent normative data on appropriateness of fittings are lacking. Verification measures that assess closeness of fit-to-target include raw deviations from target, root-mean-squared-error (RMSE) deviations from target, and aided Speech Intelligibility Index (SII) values. Establishing normative ranges for these measures may help hearing professionals determine whether a patient's fit-to-targets and/or aided speech audibility is typical for his or her degree of hearing loss.
This article aims to characterize the range of fit-to-target and the range of aided SII associated with hearing aid fittings using the Desired Sensation Level version 5.0 (DSL v5-adult) prescription with adults, considering also hearing aid style, venting, and audiometric characteristics.
A descriptive and correlational study of data collected from a retrospective chart review.
Hearing aid fittings to 281 ears were compiled. The four-frequency average deviation from target (RMSE) was within ± 5 dB of target in 77% of fittings for mid-level speech. Deviation from targets increased with hearing loss, particularly when the loss is greater than 85 dB hearing level or if the loss was steeply sloping. Venting increased the deviation from targets in the low frequencies. Aided SII values strongly correlated with the participants' hearing thresholds. Clinical ranges for RMSE and aided SII were developed for characterization of fitting outcomes.
Fitting to DSL v5-adult targets was observed within ± 5 dB absolute deviation, or within 5 dB RMSE, on average for typical adult hearing aid fittings. Confidence intervals for deviation from target and aided SII are proposed.
使助听器输出水平与规定目标相匹配是最佳实践的一个组成部分，但目前缺乏关于适配适当性的最新规范数据。评估与目标适配程度的验证措施包括与目标的原始偏差、与目标的均方根误差（RMSE）偏差以及助听言语可懂度指数（SII）值。为这些措施建立规范范围可能有助于听力专业人员确定患者与目标的适配情况和/或助听言语可听度对于其听力损失程度而言是否典型。
本文旨在描述使用成人版5.0期望感觉级（DSL v5 - adult）处方为成人适配助听器时与目标的适配范围以及助听SII的范围，同时考虑助听器款式、通气孔设置和听力测试特征。
一项对回顾性病历审查收集的数据进行的描述性和相关性研究。
汇总了281只耳朵的助听器适配情况。对于中等强度言语，77%的适配中与目标的四频率平均偏差（RMSE）在目标的±5 dB范围内。与目标的偏差随听力损失增加，尤其是当听力损失大于85 dB听力级或损失呈陡坡型时。通气孔设置增加了低频与目标的偏差。助听SII值与参与者的听力阈值密切相关。为描述适配结果制定了RMSE和助听SII的临床范围。
对于典型的成人助听器适配，观察到与DSL v5 - adult目标适配的绝对偏差在±5 dB内，或RMSE在5 dB内。提出了与目标偏差和助听SII的置信区间。
