International Journal of Otolaryngology / 2013 / Article / Tab 1

Clinical Study

Long-Term Effect of Enzyme Replacement Therapy with Fabry Disease

Table 1

Grades of severity of hearing loss. In Japan, the severity of SSNHL has been classified as follows.

Grade 1Less than 40 dB
Grade 2More than 40 dB, less than 60 dB
Grade 3More than 60 dB, less than 90 dB
Grade 490 dB or more

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