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KMID : 0361020120550120764
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Korean Journal of Otolaryngology - Head and Neck Surgery
2012 Volume.55 No. 12 p.764 ~ p.770
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Correlation of Threshold of Click-Evoked Auditory Brainstem Response with Pure-Tone Threshold Average in Various Formulas
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Seo Jae-Hyun
Jeon Eun-Ju
Park Yong-Soo
Kim Ju-Eun
Kim Dong-Hyun
Nam In-Chul
Lee Il-Hwan
Lee Ho-Seok
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Abstract
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Background and Objectives: The aim of this study is to assess the correlation between the threshold of click-evoked auditory brainstem response (ABR) and the pure-tone averages in various formulas.
Subjects and Method: Data were obtained from 207 patients (326 ears) with sudden sensorineural hearing loss. All subjects underwent hearing threshold evaluation using pure tone audiogram (PTA), speech audiogram and click-evoked ABR. Linear regression analyses were applied to assess the relation between threshold of click-evoked ABR and threshold of separate frequencies of the PTA and to analyze the correlation between threshold for click-evoked ABR and various pure-tone averages.
Results: Results revealed a significant relation between the threshold of click-evoked ABR and PTA thresholds at 0.5 kHz, 1 kHz, 2 kHz, 3 kHz, and 4 kHz. The highest coefficients of regression and determination were 1.026 for 4 kHz and R2=0.663 for 3 kHz, respectively. The coefficient of regression was highest (=0.995) for the mean of PTA thresholds for 3 kHz and 4 kHz. The coefficient of determination was highest for the mean of PTA thresholds for 1, 2, 3 and 4 kHz (R2=0.732). Multiple regression analysis showed a significant relation between the ABR threshold and PTA thresholds for 1, 3, and 4 kHz (R2=0.732), with highest correlation coefficient at 3 kHz [ABR=11.79+(0.17×1 kHz)+(0.26×3 kHz)+(0.23×4 kHz), (p＜0.05)].
Conclusion: The threshold of click-evoked ABR correlates best with the mean of PTA thresholds for 1, 2, 3 and 4 kHz. The PTA threshold for 3 kHz has highest correlation with the ABR threshold.
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KEYWORD
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WordsZZAuditory brainstem response, Auditory threshold, Pure tone audiometry
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