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It becomes necessary in a clinical situation to calculate the binaural hearing loss of a hard of hearing person quickly. In a typical audiological clinical set-up, there is often too little time to spend in the actual interpretations of test findings to the client because of the great amount of time spent on the test itself. A complete hearing examination might well run into two or three hours, and so any short cut in arithmetical computation could add important counseling minutes with the client.
The reasons for troubling ourselves with the binaural percentage loss are manifold. Aside from offering an easy way of communicating the extent of the hearing disability to the patient, it offers the clinician a numerical value for comparisons between the same or other cases. Various governmental agencies interested in awarding compensation to certain deafened persons desire numerical values, rather than qualitative interpretations.
A method presented by
ZARCOFF M. A GRAPHIC METHOD OF DETERMINING BINAURAL HEARING LOSS. AMA Arch Otolaryngol. 1955;61(5):596. doi:10.1001/archotol.1955.00720020613012
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