PDF(Pubmed)
Abstract：
Almost since the inception of the modern-day electroacoustic audiometer a century ago the results of pure-tone audiometry have been characterized by an audiogram. For almost as many years, clinicians and researchers have sought ways to distill the volume and complexity of information on the audiogram. Commonly used approaches have made use of pure-tone averages (PTAs) for various frequency ranges with the PTA for 500, 1000, 2000 and 4000 Hz (PTA4) being the most widely used for the categorization of hearing loss severity. Here, a three-digit triad is proposed as a single-number summary of not only the severity, but also the configuration and bilateral symmetry of the hearing loss. Each digit in the triad ranges from 0 to 9, increasing as the level of the pure-tone hearing threshold level (HTL) increases from a range of optimal hearing (< 10 dB Hearing Level; HL) to complete hearing loss (≥ 90 dB HL). Each digit also represents a different frequency region of the audiogram proceeding from left to right as: (Low, L) PTA for 500, 1000, and 2000 Hz; (Center, C) PTA for 3000, 4000 and 6000 Hz; and (High, H) HTL at 8000 Hz. This LCH Triad audiogram-classification system is evaluated using a large United States (U.S.) national dataset (N = 8,795) from adults 20 to 80 + years of age and two large clinical datasets totaling 8,254 adults covering a similar age range. Its ability to capture variations in hearing function was found to be superior to that of the widely used PTA4.
摘要：
几乎自一个世纪前现代电声测听计问世以来，纯音测听的结果就以听力图为特征。差不多这么多年来,临床医生和研究人员一直在寻找方法来提取听力图上的信息量和复杂性。常用的方法已经在各种频率范围内使用纯音平均值（PTA），其中500、1000、2000和4000Hz的PTA（PTA4）最广泛地用于听力损失严重程度的分类。这里,建议使用三位数三元组作为不仅严重性的单个数字摘要，而且听力损失的构型和双侧对称性。三元组中的每个数字范围从0到9，随着纯音听力阈值水平（HTL）的水平从最佳听力范围（<10dB听力水平；HL）增加到完全听力损失（≥90dBHL）。每个数字还代表听力图从左到右的不同频率区域：（低，L)500、1000和2000Hz的PTA；(中心，C)3000、4000和6000Hz的PTA；和(高，H)8000Hz时的HTL。该LCH三联听力图分类系统使用来自20至80岁以上的成年人的大型美国(U.S.)国家数据集(N=8,795)和两个大型临床数据集(总计8,254名成年人,涵盖相似年龄范围)进行评估。发现其捕获听力功能变化的能力优于广泛使用的PTA4。
