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Version October 2024
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Gardner-Robertson scale for hearing function
[1]
Gardner-Robertson scale for hearing function
[1]
Grades
Pure tone audiogram (dB)
Speech discrimination (%)
I
0 to 30
70 to 100
II
31 to 50
50 to 69
III
51 to 90
5 to 49
IV
91 to max
1 to 4
V
Not testable
0
Reference:
Gardner G, Robertson JH. Hearing preservation in unilateral acoustic neuroma surgery. Ann Otol Rhinol Laryngol 1988; 97:55.
Graphic 143691 Version 1.0
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