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American Journal of Audiology Vol.6 57-62 March 1997.
© American Speech-Language-Hearing Association
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Consistency in Latency Measurements and Interpretation of ABR Tracings

Wayne O. Olsen 1, Terri L. Pratt 1, and Christopher D. Bauch 1

1 Mayo Clinic, Rochester, MN

Multichannel ABR recordings for 30 otoneurologic patients were reviewed independently by three audiologists to assess interjudge consistency in determining absolute latencies and overall interpretation of ABR results. Four months later, the tracings were reviewed a second time to evaluate intrajudge consistency in interpretation of ABR waveforms. Interjudge agreement in marking latencies for waves I, III, and V within 0.2 ms was on the order of 90% or better. Intrajudge consistency was slightly higher. Only rarely did inter- or intrajudge differences in latency measurements exceed 0.3 ms. Agreement in overall interpretation of ABR results as "normal" or "abnormal" was unanimous for 90% of the patients. Across pairs of judges, the agreement for "normal" and "abnormal" classification of the ABR tracings was 97%. Intrajudge consistency for "normal" and "abnormal" categorization of the ABR results was 100% for one judge, 97% for the other two judges.

Key Words: auditory brainstem response, four-channel ABR, ABR latencies, ABR interpretation, inter- and intrajudge consistency

Submitted on November 9, 1995
Accepted on April 22, 1996






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