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听力损失的法医学鉴定，须采用客观、准确、定量的听力测验方法。镫骨肌声反射具有客观、所需设备简单、操作技术方便、快捷、检查费用低廉等优点。国外学者对此进行了较多研究，但结果差异较大；国内这方面研究甚少。本文按严格纳入标准，选择大样本运用逐步多元回归统计分析，建立了推算ＰＴＡ的数学模型，经统计学显著性检验，新建方程具有效高准确性，且可信度均较过去推算方法为好，可作为法医学鉴定中客观评定听力下降程度的常规筛选方法。
Forensic identification of hearing loss, to be objective, accurate, quantitative audiometry. The stapedius acoustic reflex has the advantages of being objective, requiring simple equipment, convenient and quick operation technique, low inspection cost and the like. Foreign scholars have conducted more studies on this, but the results vary greatly; little research has been done in this area in China. In this paper, the mathematical model of estimating PTA is established strictly according to the standard and large sample by using stepwise multivariate regression analysis. The statistical significance test shows that the new equation is effective and accurate, and the credibility is better than the past estimation method , Which can be used as a routine screening method for objectively assessing the degree of hearing loss in forensic science.