本ANSI技术报告描述了通过使用测听数据库分析技术评估听力保护计划在预防职业性噪声所致听力损失方面的有效性的方法。给出了使用年度监测听力图中阈值测量的可变性作为判断有效性的基础的基本原理。讨论了有关如何选择将应用分析程序的受限数据库的指南。定义了数据分析的具体程序，给出了将项目有效性划分为可接受、边际或不可接受的标准范围。为工作组12/WG12提供的工业测听数据库的样本结果作为附件提供，以供参考和说明。

This ANSI Technical Report describes methods for evaluating the effectiveness of hearing conservationprograms in preventing occupational noise-induced hearing loss by using techniques for audiometric database analysis.The rationale is given for using the variability of threshold measurements in annual monitoringaudiograms as the basis for judging effectiveness.Guidelines are discussed concerning how to select arestricted data base to which the analysis procedures will be applied.Specific procedures for data analysisare defined, and criterion ranges are given for classifying program effectiveness as acceptable, marginal, orunacceptable.Sample results for industrial audiometric data bases contributed to Working GroupS12/WG12 are included as an annex for reference and illustration.