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Abstract：
Traditional hearing conservation programs are based on the premise that noise dose, as measured by the time-weighted average noise level, is the primary risk factor associated with occupational hearing loss and that permanent threshold shifts are the most relevant outcome measures for determining when a noise-related hearing loss has occurred. However, recent studies in animal models have suggested that significant neurological damage to the hearing system can occur from noise exposures even when they are not severe enough to result in permanent threshold shifts. This has led to a number of studies attempting to relate subjective measures of noise exposure to subjective measures of hearing difficulty and suprathreshold measures of hearing performance (e.g., speech-in-noise tests). In this study, 3,330 U.S. service members volunteered to complete a survey on noise exposure, subjective hearing complaints, and tinnitus in conjunction with their annual hearing tests. Two questions were also included about the frequency and duration of temporary hearing losses that may have been experienced by the service member. The results show that subjective reports of temporary threshold shifts were substantially more predictive of tinnitus and other hearing complaints than more traditional questions based on the frequency of noise exposure.
摘要：
传统的听力保护方案是以噪声剂量为前提的,以时间加权平均噪声水平衡量，是与职业性听力损失相关的主要风险因素，永久阈值变化是确定何时发生与噪声相关的听力损失的最相关结果指标。然而,最近在动物模型中的研究表明，即使噪声暴露不足以导致永久性阈值偏移，也可能对听力系统造成严重的神经系统损害。这导致了许多研究试图将噪声暴露的主观测量与听力困难的主观测量和听力表现的超阈值测量联系起来（例如，语音噪声测试)。在这项研究中,3,330名美国军人自愿完成了一项关于噪音暴露的调查，主观听证投诉，和耳鸣以及他们的年度听力测试。还包括关于服务人员可能经历的临时听力损失的频率和持续时间的两个问题。结果表明，与基于噪声暴露频率的更传统的问题相比，临时阈值变化的主观报告对耳鸣和其他听力投诉的预测能力更高。
