Abstract
In 368 subjects with relatively advanced noise-induced deafness, the relationship between speech audiometry and pure tone audiometry and the relationship with age and the number of years worked under noise were studied.1) There was a correlation between speech audiometry and pure tone audiometry; that is, the results of speech audiometry became worse as hearing level for pure tone audiometry became lower.2) As for the age and the number of years worked, the results were not obtained because of unevenness among the subjects.3) The horizontal type gave slightly better results of speech audiometry as compared with the abrupt type.There was not much difference from other kinds of sensorineural deafness so far as the results above are concerned.
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