Margolis R H, Fox C M
J Speech Hear Res. 1977 Jun;20(2):241-53. doi: 10.1044/jshr.2002.241.
Previously reported acoustic reflex threshold data from normal and hearing-impaired subjects indicate that the effect of stimulus bandwidth on reflex thresholds is altered by sensorineural hearing loss. It is this change in the "bandwidth effect" that forms the basis for predicting hearing loss from reflex threshold data. Three predictive procedures were compared for 17 normal and 60 hearing-impaired ears. All methods correctly identified most hearing losses but none of the methods accurately estimated magnitude of hearing loss. Two methods were characterized by a high rate of false positives. The third was tailored to minimize false positives (6%) and maintain a high rate (93%) of predicting hearing losses greater than 32 dB while making no attempt to make finer discriminations. This more conservative approach minimizes serious predictive errors while identifying a high proportion of clinically significant hearing losses.
先前报道的来自正常受试者和听力受损受试者的声反射阈值数据表明，感觉神经性听力损失会改变刺激带宽对反射阈值的影响。正是这种“带宽效应”的变化构成了从反射阈值数据预测听力损失的基础。对17只正常耳朵和60只听力受损耳朵比较了三种预测程序。所有方法都能正确识别出大多数听力损失，但没有一种方法能准确估计听力损失的程度。两种方法的特点是假阳性率高。第三种方法旨在将假阳性率降至最低（6%），并保持较高的预测听力损失大于32分贝的比率（93%），同时不试图进行更精细的区分。这种更保守的方法在识别高比例具有临床意义的听力损失的同时，将严重的预测误差降至最低。
