Peek Barbara F, Rosenfeld Mia A L, Bratt Gene W, Williams David W
VA Tennessee Valley Healthcare System Nashville, TN 37217, USA.
J Am Acad Audiol. 2007 Apr;18(4):282-91. doi: 10.3766/jaaa.18.4.3.
A total of 190 individuals participated in a clinical visit during the Cooperative Studies Program (CSP) 418-A Long Term Follow-Up Study. Of this cohort, 158 participants were considered current hearing aid users, and 32 were non-hearing aid users. Of the current hearing aid users, 81 were still using their original 418 study devices, and 77 had acquired new hearing aids. Coupler and real ear measurements were completed on all available hearing aids. Results showed that study aids had remained relatively stable over the six years between CSP 418 and CSP 418-A. On average, these hearing aid wearers preferred use gain settings that were 6-9 dB less than current NAL-RP insertion gain targets. Mean real ear insertion gain (REIG) was comparable to the mean real ear insertion gain of the same participants in the original study, and users did not tend to increase gain as hearing decreased. Real ear saturation responses (RESR) remained unchanged. Loudness discomfort levels (LDL) obtained during 418-A were significantly lower than LDLs obtained on those same participants at both the initial and final visits in the previous study.
共有190人参与了合作研究项目（CSP）418 - A长期随访研究中的临床访视。在这个队列中，158名参与者被视为当前的助听器使用者，32名是非助听器使用者。在当前的助听器使用者中，81人仍在使用他们最初的418研究设备，77人已购置了新的助听器。对所有可用的助听器都进行了耦合器和真耳测量。结果表明，在CSP 418和CSP 418 - A之间的六年里，研究用助听器保持了相对稳定。平均而言，这些助听器佩戴者偏好的使用增益设置比当前NAL - RP插入增益目标低6 - 9 dB。真耳插入增益（REIG）均值与原始研究中相同参与者的真耳插入增益均值相当，并且使用者不会随着听力下降而倾向于增加增益。真耳饱和反应（RESR）保持不变。在418 - A期间获得的响度不适阈（LDL）显著低于在前一项研究中这些相同参与者在初次和末次访视时获得的LDL。
