镫骨肌声反射推算听敏度及法医学评价

听力损害的法医学鉴定，须采用客观、准确、定量的听力测验方法。声镫骨肌反射具有客观、设备简单、操作方便快捷、检查费用低廉等优点。国外学者对此进行了较多研究，结果差异较大。国内这方面研究较少。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，新建方程具有较高准确性。且可信度均较过去推算方法为好。年龄、中耳阻抗轻度异常对推算准确性无显著影响。声镫骨肌推算听敏度数学模型仍可作为法医学鉴定中客观评定听力下降程度的首选常规方法。

Prediction of hearing impairment with the acoustic-stapedius reflex and its forensic medical evaluation

The forensic medical audiometric evaluation should fulfil the requirement of objective detection and accurate quantitation of the level of hearing loss. The advantages of an acoustic-stapedius reflex thresholds are used objective simple equipments, easy to operate and cheap. There have been more reports in foreign literature, but the results vary a lot. Only a few reports present in China. Large sample has been selected for this study, and the multiple stepwise regression was used to establish the mathematical models for estimating PTA on the basis of ART. The statistical lest indicates that the new equation is more accourate, and its confidence is better than that of other methods. Accuracy of hearing loss prediction is not significantly affected by chronologic age and minor tympanometric abnormalities in the present study. The new mathematic models of acoustic stapedius reflex have been suggested to be a routinely method used ill forensic medical audiological assessment.